Questions Asked on
October 17, 2010

Physics
A springloaded toy gun is used to shoot a ball of mass m=1.5 kg straight up in the air. The spring has spring constant k=667 N/m. If the spring is compressed a distance of 25.0 centimeters from its equilibrium position and then released, the ball reaches
asked by Eden 
trig
prove that cos 52 + cos 68 + cos172 = 0
asked by Anonymous 
chemistry please help
Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standardstate conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard
asked by Jazmin 
Chem
I stuck on this problem. Can you help me to solve it? A reaction mixture in a 3.67L flask at a certain temp. initially contains 0.763g H2 and 96.9g I2. At equilibrium, the flask contains 90.4g HI. Calculate the equilibrium constant(Kc) for the reaction at
asked by Kim 
chemistry please help
the enthalpy change when a strong acid is neutralized by base is 56.1 kJ/mol. If 135 ml of .450 M HI at 23.15 C is mixed with 145 of .500 M NaOH at 23.15 C What will the max temperature reached by the resulting solution? tamana: Assume the specific heat
asked by Jazmin 
CHEM
is breaking an egg a chemical or physical change? is cooking an egg a chemical or physical change?
asked by Elizabeth 
Physics
How much work is required to stop an electron (m= 9.11 * 10^31 kg) which is moving with a speed of 1.80×10^6 m/s?
asked by Eden 
math
A tree casts a shadow that is 20 feet long. The angle of elevation from the end of the shadow to the top of tree is 66 degrees. Determine the height of the tree, to the nearest foot.
asked by marie rose 
Algebra
You have 600 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed?
asked by Tori 
general chemistry
A student needs to determine by titration with NaOH the precise %KHP in an unknown sample that is thought to contain approximately 50%KHP. Approximately what mass of sample should the student use in order to use about 20mL of 0.1005 M NaOH to reach the
asked by Rosie 
10th grade
a tree casts a shadow that is 20 feet long. the angle of elevation from the end of the shadow to the top of the tree is 66 degrees. Determine the height of the tree to the nearest foot.
asked by marie 
physics
A motorcycle stunt rider must jump a 100m wide canyon given a 20° ramp positioned on either side. What minimum speed is required so the rider will clear the canyon?
asked by erin 
Chem
The relationship between volume and pressure (at constant temperature) is directly proportional. my answer True The relationship between pressure and temperature (at constant volume) is inversely proportional. my answer True The relationship between
asked by chris 
CHEMISTRY FORMULA
How would you write the chemical formula for Mercury(I) nitrate. i have Hg(NO3)2 since the charge of nitrate is 2 and Mercury's is 1. However, upon checking online i found that the correct formula is Hg2(No3)2. I don't understand where the subscript 2 of
asked by Moi 
Organic Chemistry  Melting Point
You have an unknown with an observed melting point of 9093°C. Is your unknown compound A with a reported melting point of 95.596°C or compound B with a reported melting point of 90.591°C? Explain.
asked by Lisa 
entrepreneurship
1 Which entrepreneurial/small business owner characteristics does Bill have that may be important to his success? Which characteristics could lead to his failure? 2 What steps should Bill take to avoid the pitfalls common to a small business?
asked by mahalakshmi 
Physics
6 J of work is needed to push an object of mass 2 kg from point A to point B of the frictionless inclined plane. If the angle of inclination is 30°, the height of the plane is h, what is the length s of the inclined plane?
asked by Anonymous 
physics
in what direction should a force be applied to produce maximum torque.?
asked by claudia 
geometry
Find the values of x and y that make the quadrilateral a parallelogram. Show all your work. a parallelogram is drawn with opposite sides of 4 times y minus 1 and 2 times y plus 7. The second set is 3 times x plus 1 and 4 times x minus 2
asked by Anonymous 
Microeconomics
Combination Health Care All Other Goods A 0 100 B 25 90 C 50 70 D 75 40 E 100 0 b. What is the opportunity cost of combination C? c. Suppose a second nation has the following data. Plot the PPC, and then determine which nation has the comparative advantage
asked by Tasha 
Physics
Please Help!!!: How many seconds will it take a 12hp motor to lift a 1500lb elevator at a distance of 9ft? what was the average velocity of the elevator?
asked by Aikawa 
science
How much heat is absorbed by a persons hand if 100 grams of steam at 100c is first converted to liquid at 100c and then cooled to normal body temperature?
asked by Alley 
calculus
A hot air balloon rising straight up form a level field is tracked by a range finder 500ft from the liftoff point. At the moment the range finders elevation ange is pi/4, the angle is increasing at 0.14 rad/min. How fast is the balloon rising at that
asked by Denzel 
Chemistry
100g of a clear liquid is evaporated and a few grams of white crystals remain. The original liquid wasa a) heterogeneous compound b) heterogeneous mixture c) homogeneous compound d) homogeneous mixture
asked by Jazmin 
AP Chemistry BornHaber Cycle?
When using the BornHaber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S (g) + e => S2 (g). Assuming that you do double the
asked by Becca 
English
Please answer each of the following questions in paragraph form. You should write one short paragraph for each response. Be sure to fully explain your answers using support from the text. 1. What do you think has happened to the narrator to make him feel
asked by Rosa 
math
A tree casts a shadow that is 20 feet long. The angle of elevation from the end of the shadow to the top of tree is 66 degrees. Determine the height of the tree, to the nearest foot.
asked by marie rose 
math
Three numbers between 70 and 80 are prime numbers.what numbers are they? Explain how you know they are prime numbers.
asked by Trish 
statitics
Find the mean and standard deviation for a binomial distribution with these values: a. n = 1000, p = 0.3 b. n = 400, p = 0.01 c. n = 500, p = 0.5
asked by Anonymous 
Physics
In the rope climb, a 68 athlete climbs a vertical distance of 9.0 in 13 . What minimum power output was used to accomplish this feat? In Watts
asked by Eden 
physics grade 11
A 4.3 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.8 m/s2 . If the upward acceleration of the bucket is 4.6 m/s2, find the force exerted by the rope on the bucket. Answer in units of N. I'm almost sure the answer
asked by Drew 
Chemistry
If 5.86g of glucose are reacted and 1.44L of CO2 gas are collected at 293K and .984atm. What is the percent yield of the reaction? C6H1206 > 2C2H5OH + 2CO2
asked by Andrea 
math
Suppose the yearly rainfall totals for a some city follow a normal distribution, with mean of 18 inches and standard deviation of 6 inches. For a randomly selected year, what is the probability, P, that total rainfall will be in each of the following
asked by Anonymous 
math
CALCULATE THE UNIT COST OF $1.85 FOR 4 KG
asked by Ted 
art
Looking on the national gallery of art website (or it can be seen by typing the name of the painting in any search box) review The Emperor Napoleon in His Study at the Tuileries by Jacques Louis David.Discuss the painting techniques and formal elements. I
asked by m 
computer science
What is the binary representation of the following hexadecimal number? What are the decimal numbers they represent when interpreted as undesigned integers. (a) F4 (b) 9F
asked by Drake 
college Algebra
This is my problem: A carpenter is building a rectangular room with a fixed perimeter of 336 ft. What dimensions would yield the maximum area? What is the maximum area? I am confused on what steps it takes to come up with the answer. I would like an
asked by Lee 
Chemical Formula
How would you write the chemical formula for Mercury(I) nitrate. I have Hg(NO3)2 since the charge of nitrate is 1 and Mercury's is 1. However, upon checking online i found that the correct formula is Hg2(No3)2. Given that the charge for mercury in this
asked by Moi 
calculus
Find the equation of a cubic function that gives you the surface area of the cans given a set volume. The set volume is 300ml
asked by Emily 
Chemistry
What is the balanced equation for the reaction of 3.000 g of K2CO3 and HCl?
asked by Amber 
Chemistry
The following reaction represents the decomposition of hydrogen peroxide: 2H2O2 > O2 (g) + 2H2O (l) How many molecules of water are produced from the decomposition of 3.4g of hydrogen peroxide, H2O2? Please help, I got 0.02 molecules of water but need to
asked by Dee 
Chemistry
What is the percentage yield for a reaction if you predict the formation of 21 grams of C6H12 and actually recomvered only 3.8 grams? is the answer 18% 3.8g/21g x 100% pls verify.
asked by Devin 
statitics
E. Coli outbreak. Outbreaks of E. coli have occurred at a rate of 2.5 per 100,000. Assume this rate represents the mean for the number of outbreaks (as a Poisson random variable). a. What is the probability that at most five cases of E. coli per 100,000
asked by Anonymous 
biology
Could Elodea or Paramecium from a freshwater lake be expected to survive if transplanted into the ocean?
asked by Kiley 
math
A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a micotunnelling machine. the cable will link points with coordinates A(18,12), B(8,1), C(3,4), and D(15,7), in a run beginning at D. if one unit on
asked by Ted 
Latinplease answer
What are some good ways I could study for my Latin test. It's tomorrow!
asked by Fghl 
chemistry
The equation for the reaction between hydrogen gas and oxygen gas is: 2H2(g) + O2(g) > 2H2O(l) i) How much hydrogen will react with 8g of oxygen? ii) how much water will be formed when 6g of hydrogen react? i would appreciate your help.
asked by paul 
PHYSICS
How much work did the movers do (horizontally) pushing a 140kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.60?
asked by Nikohl 
Chemistry
Mercury and bormine react with each other to produce mercury(II)bromide: Hg + Br2 > HgBr2 a) What mass of HgBr2 can be produced from the reactiion 10g HG and 9g Br2? [the part that really confuses me] What mass of which reagent is left unreacted? b) What
asked by Katie 
Physics
How much work must you do to push a 10 kg block of steel across a steel table friction is 0.6 at a steady speed of 1.3 m/s for 9.8 s?
asked by mike 
physics
A body goes from P to Q with a velocity of 10 m/s and comes back from Q to P with a velocity of 20 m/s. What is the average velocity of the body during the entire trip?
asked by HASANNY 
Physics
A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 14.0 N, applied parallel to the incline, is just sufficient to pull the block up
asked by Eden 
physics
The escalator that leads down into a subway station has a length of 29.5 m and a speed of 1.6 m/s relative to the ground. A student is coming out of the station by running in the wrong direction on this escalator. The local record time for this trick is 11
asked by Anonymous 
Calculus HARD NEED HELP
The volume of a cone of radius r and height h is given by V=(1/3)pir^2h. If the radius and the height both increase at a constant rate of 2cm/s at which rate in cubic cm/s is the volume increasing when the height is 8cm and the radius is 6cm. So The answer
asked by Kris 
chemistry thank you
If the ÄH of reaction for the following 2ZnS (s) + O 2(g) = 2ZnO (s) + 2S (s) is 290 kJ, then what is the ÄH of reaction for the following reaction: ZnO (s) + S (s) = ZnS (s) + 1/2O 2(g)? Would i flip the first equation? then after that i am lost
asked by nalleli 
US History
Please help me with these: (I finally finished English 2, and am about to get halfway through this!) 4. Prohibitionists and purity crusaders shared the goal of a. making charity "scientific" b. redistributing the nation's wealth c. ending immigration from
asked by mysterychicken 
chemistry
tell me if im right or wrong For Kc,it only includes gas and aq for Kp, only includes gas. What about vapor pressure, do i use (g) notation to represent it
asked by nighter 
chemistry
what is the difference between these two equation: delta G= delta HT(delta S) and deltaG(knot)=delta H(knot)T(delta S knot) Which G do i use to tell whether the reaction is spontaneous
asked by nighter 
chemistry
What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation: 2CO(g) + O2(g) > 2CO2(g) 17.0 L CO2 x (1 moles O2/2 moles CO2) = 17.0 x (1/2) = 8.5 L did i do this problem correctly
asked by christine 
mathematics
two springs and two masses are attached in a straight line on a horizontal frictionless surface. the system is set in motion by given external force f(t) acting on the right hand mass m2. we denoted by x(t)the displacement(to the right) of mass m1 from
asked by zainab 
PHYSICS
A football is thrown with an initial upward velocity component of 15.0 m/s and a horizontal velocity component of 18.0 m/s The time required for the football to reach the highest point in its trajectory is 1.53s. It gets 11.5m above the ground. How much
asked by Mattie 
Statistics
The average age of chemical engineers is 37 years with a standard deviation of 4 years. If an engineering firm employs 25 chemical engineers, find the probability that the average age of the group is greater than 38.2 years old. If this is the case, would
asked by Anonymous 
physics
the coefficient of starting friction for wood on wood is 0.55. What is the force of friction of a wood block of mass 3.5 kg being pulled on a wood floor? i think i use the formula F=mMA where F is the force needed to move a solid from rest, m=coefficient
asked by courtney 
Physics
A 26 bullet strikes and becomes embedded in a 1.35 block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.23, and the impact drives the block a distance of 9.9
asked by Brittanie 
poems
for english class i have to write a poem personifying something. I chose to personify a picture in a picture frame. I am not at all good at poems and was wondering if you guys could read mine and tell me what changed i should make and if its really bad and
asked by claire 
chemistry
The propane fuel(C3H8) used in gas barbecues burns according to the following equation: C3H8(g) + 5O2(g) > 3CO2(g) + 4H2O(g) ∆Ho rxn = 2044kj If a pork roast must absorb 2200 kj to fully cook, and if only 10% of the heat produced by the barbecue is
asked by amy 
english
This is an example of a metaphor. Once more in her bed beside the warm cocoon of her sister. What kind of reaction or feeling does this give when you first read it and what is this metaphor saying. Thank you
asked by heather 
chemistry
The equation for the reaction between hydrogen gas and oxygen gas is: 2H2(g) + O2(g) > 2H2O(l) i) How much hydrogen will react with 8g of oxygen? ii) how much water will be formed when 6g of hydrogen react? i would appreciate your help.
asked by paul 
Finance
what is the present value of 1000 paid at the end of each of the next 100 years if the interest rate is 7% per year
asked by Tiffany 
Epidemiology
• Consider each of the following scenarios and explain whether the variable in question is a confounder: a. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a
asked by Joe 
chemistry 150
given the mass of a popcorn kernel. told the % water in kernel, given temperature of water vapor and pressure. find !@#$%^& many mL of water vapor is there...i know you use PV=nRT but i cant find out what an example of this problem would look like
asked by mone 
Math (PLEASE ANSWER!)
Hi everyone! May anyone please tell me how to tell how many zeroe's are required in your answer when moving the decimal points in converting metric units? Thank you very much! Please help soon, if possible, as I have a big test coming up! For example, 5.17
asked by Anonymous 
7th grade
what is 14 1/2  7 1/5?
asked by KayKay 
math
a coast guar ship left a port at 30 mph. four hours later a helicopter was dispatched at 90 mph to intercept the ship. how long will it take the helicopter to catch the ship?
asked by mat 
Calculus
The volume of a cone of radius r and height h is given by V=(1/3)pir^2h. If the radius and the height both increase at a constant rate of 2cm/s at which rate in cubic cm/s is the volume increasing when the height is 8cm and the radius is 6cm. So The answer
asked by Kris 
computer science
Prove that {NOT, AND, NOR} are universal...
asked by chad 
6th Grade Math
How do I know whether to round all the numbers first, THEN estimate, or to find my answer THEN round? I was doing a favor for my teacher, and I missed that part. She went pretty fast throught the lesson, so I forgot to ask her. Thank you!
asked by Anonymous 
chemistry
write the formula of the conjugate acid for base H2PO
asked by Dana 
Math
If you had a fraction strip folded into twelfths, what fractional lengths could you measure with the strip?
asked by Kerstyn Purkey 
algebra
one plane left an airport at 11:30 am. A second plane, traveling at 320 mph left the same airport at 1:00 pm and overtook the first plane at 4:30 pm. At what speed was the first plane traveling?
asked by jose 
physics
A 33 g particle is moving to the left at 22 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?
asked by kollin 
Maths
Solve for x: 5sin(2x) + cos(x) = 1.916 Can someone please show me the steps?
asked by Claire 
History
would 1924 be during the 20th century?
asked by Amy 
English 2
Compose and essay that describes the significance of the Winter Carnival for Gene. What does it symbolize when Finny opens the carnival by burning a copy of The Iliad? Why is it ironic that the Carnival ends with the arrival of Leper's telegram announcing
asked by mysterychicken 
physics
A 7.0 kg bundle starts up a 44° incline with 140 J of kinetic energy. How far will it slide up the incline if the coefficient of kinetic friction between
asked by Anonymous 
math grade 11
i need help with this quretsion ; i don't know if im right, and i dontknwo what do next question expand and simplfy: 4√7(2√3 + 3√6  √7) my work = 8√21 + 12√42 4√49 please help me
asked by priya 
Chemistry
How many milliliters of 6.0 M HCl would be needed if 3.000 g of K2CO3 were used in an experiment?
asked by Amber 
Math 7th grade
12  5 3/10
asked by KayKay 
Chemistry
How many grams of KCl would be formed in the reaction of 3.000 g of K2CO3 and HCl?
asked by Amber 
english
Tips on amazing speech writing?
asked by Fghl 
Math.
Nancy Tobey planted a vegetable garden in the backyard. However, the deer and raccoons have been stealing all the vegetables. She asked John to fence in the garden. The rectangular garden measures 8 feet by 15 feet. How many feet of fence should John
asked by Unknown. 
Math 7th grade
6 11/12  4 5/12
asked by KayKay 
physics
An unbanked curve has a radius of curvature of 75m. On a winter day, with snow on the road, the coefficient of static friction between the tires of the car and the road is .23. What is the maximum speed with which the car can safely negotiate the curve?
asked by Anonymous 
Physics
In what distance can a 25 gram bullet traveling at 250m/s be stopped by force of 5000N?
asked by Aikawa 
Chemistry
Posted by ann on Sunday, October 17, 2010 at 4:26am. In melting point determination, why shouldn't a substance be remelted? (i.e. why should we not remelt a substance that has previously been melted in a melting point tube?)
asked by ann 
Math
Write each complex number in rectangular form? I need help with this. :/ 2(cos120°+i sin 120°) and 4(cos 7π/4 + i sin 7π/4) ?
asked by Fernando 
chemistry
At what temperature (C) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1C? T1V1=T2V2 T1(6.1)=(17.8)(300.25) T1=876? Please check my answer
asked by amber 
physics
a book slides off a table top with a speed of 18 meters per second. it strikes the floor in 0.52 seconds how tall was the table in meters
asked by Ibis Ley 
algebra
I am thinking of a three digit number. It is am odd multiple of three, and the product of its digits is 24. It is larger than 275. What are all the numbers I could be thinking of? need help thank you
asked by Anonymous 
Physics
Gayle runs at a speed of 3.80 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they
asked by A 
social studies
What is the base for the earth's hills and mountains?
asked by Andy 
Social Studies 6th grade
Why don't scientists agree on when and how the first people settled in North America?
asked by Billie 
chem
what is the pH of a solution that is 0.40 M in sodium acetate and 0.60 M on acetic acid? (Ka for acetic acid is 1.85x10^5.)
asked by Kevin 
College Physics
The four tires of an automobile are inflated to a gauge pressure of 2.0x10^5 Pa. Each tire has an area of 0.024m^2 in contact with the ground. Determine the weight of the automobile.
asked by Samantha 
statistics
The game of roulette uses a wheel containing 38 pockets. Thirtysix pockets are numbered 1, 2, 3, ..., 35, 36, and the remaining two are marked 0 and 00. The wheel is spun, and a pocket is identified as the "winner." Assume that the observance of any one
asked by Anonymous 
statistics
if Ho:Mu=50 and Ha:mu 59 and beta=10 what is alpha if x exceeds 56 for n=49
asked by neenee 
Human Services
Summarize legislative tasks and the overall role of the judiciary in shaping public policy. For the same agency or organization you chose previously, describe the laws and judicial decisions that influence how it operates. How do these laws influence the
asked by Kellly 
college chemistry
A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas (1)(0.285) = n(0.0821)(273). .0036 is this correct?
asked by Melissa 
statistics
4.90. Defective Equipment. A piece of electronic eqipment contains six computer chips, two of which are defective. Three chips are selected at random, removed from the piece of equipment, and inspected. Let x equal the number of defectives observed, where
asked by Anonymous 
chemistry
What volume (in Liters) of hydrogen must react to form 17.0L of ammonia according to the following balanced equation: N2(g) + 3H2(g) > 2NH3(g) Ratio from equation is H : NH3 = 3 : 2 = 3/2 : 1 = 17x3/2 : 17 = 25.5 : 17 17 L of hydrogen can you check my
asked by Melissa 
statitics
Evaluate these binomial probabilities a. C82 (.2)2 (.8)6 b. C81 (.2)1 (.8)7 c. C80 (.2)0 (.8)8 d. P(X ≤ 1), when n = 8, p = 0.2
asked by Anonymous 
writing
can you give me a few examples on a personal conversation about personal finance and credit cards using five different pronouns?
asked by rhonda 
Physics
Dave rides his motorcycle off the rim of the Snake River Canyon at a horizontal velocity of 54 meters per second. how far has he dropped (meters) into the canyonin 1.48 seconds? NOTE: assume he does not hit the bottom.
asked by Ibis Ley 
Chemistry
Determine the mass of zinc sulphide,ZnS which is produced when 6.2 g of zinc and 4.5 g of sulphur are reacted.
asked by Dan 
statitics
Approximately 40% of all U.S. households own at least one dog (according to the humane society). Suppose 15 households are randomly selected for a pet ownership survey. a. What is the probability that exactly eight of the households have at least one dog?
asked by Anonymous 
Thermochemistry
It takes 45.0 J to raise the temperature of an 9.70 g piece of unknown metal from 13.0 degrees C to 24.5 degreesC. What is the specific heat for the metal?
asked by Michelle 
statitics
Let X be a Poisson random variable with mean µ = 2.5. Use Table 2 in Appendix I to calculate these probabilities: a. P (X ≥ 5) b. P(X < 6) c. P(X = 2) d. P(1 ≤ X ≤ 4)
asked by Anonymous 
statitics
Intensive Care. The number X of people entering the intensive care unit at a particular hospital on any one day has a Poisson probability distribution with mean equal to five persons per day. a. What is the probability that the number of people enterin the
asked by Anonymous 
statistics
What would be the range of the scores 71, 37, 48 from the same set with 95% cofidence level?
asked by Sue 
Physics
A 25 kg chain initially at rest on a horizontal floor requires a 365 N horizontal force to set it in motion. Once the chair is in motion, a 327 N horizontal force keeps it moving at a constant velocity. a. Find the coefficient of static friction between
asked by Daniel 
Math Correct or not Correct?
Correct or not correct?? 9 1/6 + 6 1/4 = 15 5/12
asked by KayKay 
Physical Science
Julia and Wayne heat their house during the winter with an electric heater. The thermostat on the heater is set to 20 °C and the thermostat is cycling on and off as it keeps the room temperature stable. Julia walks out of the room leaving the light on.
asked by Raven 
Physics
How much work did the movers do (horizontally) pushing a 140kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.60?
asked by Nikohl 
Physical Science
Tony is driving across the outback in the middle of the night. He finds that he is running out of gas and might not make it to the next town. He tells Julie, his passenger, that he’s going to turn off the headlights in order to save fuel. She tells him
asked by Raven 
Chemistry
Hi I just wanted to verify a few answers to chem questions I'm working on. Was wondering if anyone could help? 1. Calculate the molar concentration of 2.34g of lithium hydroxide, LiOH disolved in water to make 750ml of solution. My answer was CLiOH = 0.133
asked by Andre 
Social Studies
If you were writing the Jamestown *Setting *Living *Characters *Problems What would you include for these topics?? (I need it in bullet form)
asked by Sumaiya 
Physical Science
Bob and Christine are sweltering in their hot office. Bob props opens the door of the refrigerator, and says that this will help keep the room cool. Christine says that this won’t work, and in fact the room will gradually get hotter than if the fridge
asked by Raven 
geometry
what is the volume of a box if the box measure is 70
asked by tyana 
Physics
A 2.9 kg block slides along a frictionless surface at 1.3 m/s. A second block, sliding at a faster 5.0 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.7 m/s. What was the mass of the second block?
asked by mike 
ORIENTATION MAKEUP
A. essay questions. B. suggested activities. C. practical exercises. D. multiplechoice questions.
asked by leyla 
physics
a book slides off a table top with a speed of 18 meters per second. it strikes the floor in 0.52 seconds how tall was the table in meters. Is this how t looks? h= 1/2 x 32.2 x 0.52 square
asked by Ibis Ley 
Physical Science
Natasha says that in a car, the accelerator pedal is used to make the car go faster, and does not actually waste fuel. It is the brake pedal that wastes fuel. Is she right? Why?
asked by Raven 
Meteorology
A gas bubble with a volume of 3 milliliters (ml) originates at the bottom of a lake where the pressure is 4.0 atmospheres (atm). What will the bubble's volume be when it reaches the surface, assuming the temperature doesn't change?
asked by LaQuinta 
Physics
That neighbor's pesky kid now has new missiles that make elastic collisions. He insists on throwing 25.0 g rocks at your new 2.25 kg light fixture hanging by a 26.0 cm wire from the ceiling of your porch. If each rock strikes the fixture traveling at 10.0
asked by . 
grade 11 physics
A bomber flying horizontally at 250 m/s releases a bomb 1500m above the ground. At the point of impact, what were the horizontal speed and vertical speed?
asked by spencer 
math 20
Jeremy has a balance owing of $4000 on his credit card. The creditcard company charges 18.0% annual interest, compounded monthly. 1.) If Jeremy makes payments of $300 every month, how much will he still owe after making 12 payments? 2.)Determine the
asked by Sandi 
computer science
prove (a) A(+B)=AB & (b) A+B=A+B both algebraically and using the truth table.
asked by Traxx 
physics grade 11
A car launches itself off a 20° ramp at the top of a 25m cliff travelling at 35 m/s. How long will it be in the air for and how far from the base of the cliff will it land?
asked by taylor 
6th grade
What is the unscrambled way of "Artiotinm"????
asked by jiwon 
gen chem
what is the concentration of an aqueous solution when you add 9.58x10^4 moles of copper nitrate to 42ml of water
asked by Rob 
statistics
In the July 29, 2001, issue of The Journal News (Hamilton, Ohio) Lynn Elber of the Associated Press reported on a study conducted by the Kaiser Family Foundation regarding parents’ use of television set Vchips for controlling their children’s TV
asked by Anonymous 
Chemistry
What is the largest atom in period 2 of the periodic table?
asked by TT 
English
Which sentence is correct? 1) Check the manufacturing dates of the products. or 2) Check the manufacture dates of the products.
asked by candy 
Math
15 1/6  6 5/12 ok so I know 15 1/6 = 15 2/12 right? but you can't subtract 5 from 2?
asked by KayKay 
chemistry
At what temperature (C) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1C? T1V1=T2V2 T1(6.1)=(17.8)(300.25) T1=876? Please check my answer
asked by Amber 
chemistry
what is the difference between these two equation: delta G= delta HT(delta S) and deltaG(knot)=delta H(knot)T(delta S knot) Which G do i use to tell whether the reaction is spontaneous
asked by nighter 
history
explain reign of terror face in the french revoloution. discuss robesperre's involvement and evolution of \his political views. do u think it was neccessary in the revolution? what lessons can be learned from this event? i have to write an essay on this
asked by bob 
chemistry
tell me if im right or wrong For Kc,it only includes gas and aq for Kp, only includes gas. What about vapor pressure, do i use (g) notation to represent it
asked by nighter 
spelling
I need help with unscambling a word.The word is suit,fret,tell,pliers can you help me with the words please
asked by anabella 
Chemistry
Determine the mass of zinc sulphide,ZnS which is produced when 6.2 g of zinc and 4.5 g of sulphur are reacted. This question is really confusing me, and I'm not sure where to start. I think I have to calculate the moles of each given reactant first in
asked by Dan 
math
a freight train that is 1 mile long is traveling at 60mph. a second train that is 2 miles long is traveling 40mph. the trains are moving in opposite directions on parallel tracks. how many seconds does it take between the time their locomotives meet and
asked by bob 
chem  check my answers?
i already posted this but i tried to solve it on my own can you check at the end of this paragraph? The study of kinetics group 1: Temp: 12.6 C T(K): 12.6+273= 285.6 1/T(K): 3.50X10^3 this one is the x value Time: 816 sec Rate ®: 7.66 x10^6 LnR: 11.8
asked by chemistyr 
6th grade English
Most people think of bamboo as a tree or a bush. I have to pick out the verb and tell if it's transitive or intransitive think=intransitive
asked by Anonymous 
English
Thank you very much for your corrections. I would kie to know if everything is OK in these sentences, too. 1) Mickey phoned about the audition for Best Days.He’d like to know what time the audition starts. 2)The secretary tells him the audition starts at
asked by Franco 
Physics
Ok so I am not so bad at physics but I find it hard to understand formular like how to use this one mu *m*g= I know its somewhat related to friction but what is the mu stand for and g too IF someone could plzz translate these symbols to words I would
asked by Pablo 
calculus
Regard y as the independent variable and x as the dependent variable and use implicit differentiation to find dx/dy. y sec(x) = 9x tan(y)
asked by Katie 
Math subtractin Fractions1
1 1/6  3/4?
asked by KayKay 
Foods
what cooking tool is used to make sauces which do not contain milk? I know I have asked this question already but I have still not a found very good answer. The sites that people have gave me are not helping infact they are just showing me how to cook
asked by Rose 
physics
Greg is walking in a daze. He first walks 1000m NE. Then he walks 3000m S and finally 2200m 20° N of E. How far away did Greg end up from the starting point and in which direction?
asked by jesse k 
Maths
Find the La Place Transform of a.) f(t)=t b.) f(x)=y"+2y'+Y
asked by chuck 
English
I forgot to include the following statements. I really hope you can have a look at them too. 1) They regretted missing OR having missed the bus. 2) They escaped with a ship or by a ship. 3) I have my groceries delivered by the supermarket. 4) Petra lives
asked by Franco 
chemistry
calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50ml of water from room temperature 20C to 45C? Remember heat loss during the dissolution is equal to the heat capacity of water. this value is 4.184. you assume
asked by Tersa 
trigonometry
what is sin 35=x/6
asked by aundrea 
Biochemistry
Liver alcohol dehydrogenase (ADH) is a nonspecific enzyme. Its normal substrate is ethanol but it will oxidize other primary alcohols like methanol. Methanol produces formaldehyde which is quite toxic and can lead to blindness. A dog ingested about 36 ml
asked by LostonEnzyme 
physics
Rockets A and B are fired straight upward from rest. Rocket A is launched first and accelerates at 11.2 m/s2. Rocket B is launched 2.10 s after Rocket A and B accelerates at 14.6 m/s2. Solve for the moment in time when the rockets are separated by 484 m.
asked by Haley 
physics
What pressure (atm) is exerted by a column of ethanol 65.0 cm high? The density of ethanol is 0.789 g/cm3 and 9.8m/s2 as your gravitational
asked by chris 
chem
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?
asked by mark 
English
I'd like to know if the following sentences (+alternatives) in indirect speech are possible. Thank you very much in advance. 1) “Would you like to have lunch with me on Sunday?”, he said to me. He invited (and not: "requested, offered) me to have lunch
asked by Franco 
Math Stil don't know how to do this problem :(
15 1/6  6 5/12 help explain?
asked by KayKay 
management
I needhelp findng informaton on the Key External Factors For WalMart. I am doing a paper on walmarts matrix stragtegy
asked by patiance 
physical
How can I train my body to run faster and run longer distances?
asked by Fghl 
Informative/Analytic Essay Assignment
For my essay I have to pick a county in Georgia and collect information about it's demographics and stuff. Then I have to do the same about my university (georgia state university). and then analyze and compare the data for the two. This is what I have so
asked by y912f 
Algebra
How would I solve: 1/3(D+3)=5 I know you need to find the recipicile, but I have no idea how to solve this.
asked by June 
6th grade
What are the d themes of geography ,
asked by Matthew 
English
The Scarlet Letter How does the reverend Mr. Wilson interpret the baby's response to Dimmesdale's entreaty? What significance do you think the baby's response may have?
asked by Andi 
Physics
A 1300 sports car accelerates from rest to 90 in 6.5 . What is the average power delivered by the engine?
asked by Nikohl 
algebra
the officejet printer can copy maria's dissertation in 18 min. The laserjet printer can copy the same document in 22 min. If the two machines work together, how long would they take to copy the dissertation?
asked by diana 
US History
I need help with this: Write 3 questions to ask farmers about new machinery and farming techniques that helped them farm the Great Plains. I have no idea what I would ask... MC
asked by mysterychicken 
math
verify, 1+csc  0  = sec0 cos(0)+cot(0) 0 is angle.
asked by am 
physics
if you pushed 50 newtons up 2 meters what was the length of the ramp
asked by Anonymous 
home economics
What do you give for a baby shower Please answer
asked by Fghl 
English
I forgot to include the following two alternatives. Thank you very much for your cooperation. 1)"Shall I get a candle?", he said. He wondered whether he should get a candle. He wanted to know if he should get a candle. 2)He asked me if I would like to have
asked by Franco 
Physics
A block of weight = 25.0 sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude = 14.0 , applied parallel to the incline, is just sufficient to pull the block up the
asked by Nikohl 
English
make 2 words, first one 8 letters and second work 4 letters out of these s l r t n r u p a e s a
asked by Melissa 
Thermochemistry
A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 167 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 degrees C. What is the enthalpy?
asked by Michelle 
adult education
"Leadership Development within Groups: Managing Conflict." Identify a conflict that has occurred recently within a group you are a part of. List the reason(s) for the conflict. Was the conflict resolved the same day? If so, what conflict style(s) were used
asked by bez 
english
does added and consume mean the same thing?
asked by risha 
chemistry Thank you
Suppose you add 81 ml of dilute acid to 54 ml of water. Both the water and acid were at room temperature (22 C) before being mixed. The temperature of the solution increased to 42 C. How much energy (in kJ) was released by the dissolution of the acid if
asked by Jazmin 
6th grade math
what is the answer showing work to 8(2h10)=16h
asked by Hannah 
physics
alpha
asked by Anonymous 
6th grade english/pronouns
Can the word "his" be a personal and a possessive pronoun? If so, can you give me a couple of sentences so I can see the difference. Thanks
asked by Lynn 
Physics
A football is thrown with an initial upward velocity component of 15.0 m/s and a horizontal velocity component of 18.0 m/s The time required for the football to reach the highest point in its trajectory is 1.53s. It gets 11.5m above the ground. How much
asked by Mattie 
science
a microscope has two of these
asked by jack 
Chem
The specific heat capacity of aluminum is .89 J/y degrees C. How much heat is required to change the temp of 1500g aluminum pan from 25 degrees C to 100 degrees C?
asked by Emily 
Statistics
What are the most prudent decisions Avionics, Inc.can make about it's responsibilities to itself and others?
asked by Donna 
History
would people wanting to have an anglosaxon race be considered a social issue?
asked by Amy 
Physics
A military helicopter on a training mission is flying horizontally at a speed of 60.0 m/s when it accidentally drops a bomb (fortunately, not armed) at an elevation of 300 m. You can ignore air resistance. How much time is required for the bomb to reach
asked by Mattie 
science
a microscope has two types of these
asked by jack 
physics
Two charged particles in an accelerator are at rest until an electric field causes them to accelerate away from each other when the field switched is turned on, particle a accelerates to the left at 8.97e+07 m/s2 while particle B accelerates to the right
asked by Becka 
Physics
An Olympic basketball player shoots towards a basket that is 5.98 m horizontally from her and 3.05 m above the floor. The ball leaves her hand 1.90 m above the floor at an angle of 60.0o above the horizontal. What initial speed should she give the ball so
asked by Tenille 
math
A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a micotunnelling machine. the cable will link points with coordinates A(18,12), B(8,1), C(3,4), and D(15,7), in a run beginning at D. if one unit on
asked by Ted 
english
How do the characters, plot, and theme of The Great Gatsby support or refute the statement that "the JazzAge society was a bankrupt world, devoid of morality, and plagued by a crisis of character"?
asked by Katie 
math 116
In 1995, the life expectancy of males in a certain country was 65.3 years. In 1999 it was 68.8 years. Let E represent the life expectancy in year t and let t represent the numbers of years since 1995. the linear function E(t) that fits the data is,
asked by angela 
Chem
The specific heat capacity of aluminum is .89 J/y degrees C. How much heat is required to change the temp of 1500g aluminum pan from 25 degrees C to 100 degrees C?
asked by Emily 
world history honors
was the reign of terror neccesary for the French Revolution? What can we learn from the French Revolution? help please ;)
asked by jamie 
physics grade 11
A 4.3 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.8 m/s2 . If the upward acceleration of the bucket is 4.6 m/s2, find the force exerted by the rope on the bucket. Answer in units of N. I'm almost sure the answer
asked by Drew 
physics
A 143g baseball is dropped from a tree 13.0 m above the ground. With what speed would it hit the ground if air resistance could be ignored? If it actually hits the ground with a speed of 8.00 m/s , what is the magnitude of the average force of air
asked by Nikohl 
Algebra
You have 50 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
asked by Hayley 
Physics
In the rope climb, a 68 kg athlete climbs a vertical distance of 9.0 m in 13 s. What minimum power output was used to accomplish this feat? In Watts
asked by Nikohl 
geometry
make a conjecture about the item in the sequence 6, 8, 32, 120 pick ansewr a. 116 b.480 c.122 d488
asked by jeffery 
writing
I need to write several sentences describing a interaction with a friend or family member about personal finance or credit cards, using five different pronouns in the sentences. Can you please give me some understanding or examples?
asked by michelle 
Math:)
4 1/2  2 7/8
asked by KayKay 
Chemistry
Hi please help with this. You will mix 5 ml of each 2M HCL and 2M NaOH solutions, calculate the concentration of NaCl formed in the new solution?
asked by John 
physics
a soccer ball is kicked with an initial velocity of 5.0 m/s^2 in a direction of 30 degrees above the horizontal a. what are the initial components of the velocity? vix= viy= b. what are the components of the veloicty just before the ball hits the ground?
asked by elana 
chemBob
What pressure (atm) is exerted by a column of ethanol 65.0 cm high? The density of ethanol is 0.789 g/cm3 and 9.8m/s2 as your gravitational constant. mass*gis the weight of the column density*h*area*g= weight density*h*g= pressure Thanks for your help Bob.
asked by chris 
chemistry
the word equation for sodium and water is: sodium+water>sodium hydroxide+hydrogen sodium and chlorine: sodium+chlorine>sodium chloride what will the equation for aqueous chlorine with aqueous potassium iodide be?
asked by chelsea 
chemistry II
What are the steps to balancing Redox reactions using the Valence method. thanks> ex problem: NH3+O2 >H2O +NO
asked by Taylor 
physics
A tank is moving away from a soldier with a bazooka at a constant velocity of 7.80 m/s. The bazooka fires a missile which accelerates from rest at 23.2 m/s2. The soldier fires the bazooka when the tank is 185 m away. A. How long is the missile in the air?
asked by Sara 
English
As she flipped through the newspapers, she saw headlines such as "Food shortages hit Mitika," "Hurricane departs coastline," and "Elkwood ravaged by flooding." Is my apostrophe and comma usage correct? Newspaper headlines are supposed to be lowercased,
asked by Ella 
HELP
I run I jump I am one of four you find me hanging around your door
asked by Tom 
English
What does this mean? It was still raining the morning when Mama told me. Mama was crying, and the rain made it seem as if the whole world was cry. What kind of mental image does this demonstrate?
asked by heather 
physics grade 11 (vector)
An airplane is flying 400 km/h west. There is a wind blowing 100 km/h NE. What is the airplane's actual speed and heading?
asked by lawrence 
chemistry
A 0.1943g iron ore sample was dissolved in hydrochloric acid and the iron was obtained as Fe 2+ (aq). The iron solution was titrated with Ce 4+ solution according to the balanced chemical reaction shown below.After calculation, it was found that 0.0237 g
asked by matt 
chemistry
If two beakers of water have the same temperature of 1000C, but one contains 100 mL and the other has 300 mL, what can you conclude?
asked by Anonymous 
chemistry
A student needed to standardize a solution of NaOH which was approximately 0.125 M. The student carefully prepared the titration setup, but after 25 mL of NaOH was added, what was the pH of solution if initially flask contains 25 mL of 0.250 M HCl
asked by Cindy 
Physics
A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude = 14.0 N, applied parallel to the incline, is just sufficient to pull the block up
asked by Eden 
Math
1. y= ax2 + bx + c, a>0 to determine what does b and c do. 2. Xv= b/2a, where did the b/2a come from.
asked by Sarah 
Math
9 3/4 + 7 7/8
asked by KayKay 
Calc
When you are solving for the point of intersection between planes do you follow the same steps when solve for the point of intersection between lines?
asked by C 
Biology
A gamete has ___ of the genetic information of their present cells and of regular body cells. A) exactly the same amount B) half C) double D) some Thanks!
asked by estela 
college
I need to write a topic sentence outline from researching sources pretaining to drug addiction and also create a reference list
asked by Jennifer 
physics
a block of mass slides off the edge of a 2 foot tall table at 3.13m/sec. how far away from the edge of the table does it land?
asked by Dawn 
science
what two factors combine to give a person weight on Earth?
asked by aadkfjldjf 
calculus
find dq/dp.q=(5p^2+2p)3/2 use impliict differentiation to find dq/dp
asked by george 
Math
5 1/6  4 7/12
asked by KayKay 
Algebra
How would I solve 32=8/7(3w1) I have no clue.. ._. These problems stress me out
asked by June 
Englis
Dear teachers ,Please read this paragraph and fix the errors.please !!! Shahrazad is main character of the one thousand and one nights. She is a good story teller, a Psychiatrist, and a guru. She is a fearless woman, determined to safe her female gender
asked by Sana 
chemistry
A mixture of CaCO3 and MgCO3 weighing 7.85 g was reacted with excess HCL. The reactions are CaCO3+2HCL=CaCl2+H2O+CO2 and MgCO3+2HCl=MgCl2+H2O+CO2. The sample reacted completely to produce 1.94 L CO2 at 25 degrees C and 785 torr. Calculate the percentage of
asked by Sue 
math
write down the value of 27 1/3
asked by tia 
Physics
A 285kg load is lifted 22.0 m vertically with an acceleration a=0.170 g by a single cable. Determine the tension in the cable. (N) Determine the net work done on the load. (J) Determine the work done by the cable on the load. Determine the work done by
asked by Eden 
physics
An ice hockey puck slides along the ice at 12m/s. A hockey stick delivers an impulse of 4.0kg*m/s causing the puck to move off in the opposite direction with the same speed. What is mass of puck?
asked by tyler 
Physics
How much work did the movers do (horizontally) pushing a 140kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.60?
asked by Eden 
algebra
If f(x)=x^2x, find the value if x=(2)2. TIP: x^2 means x squared
asked by Kate 
calc
(e^x + e^x)/2=1
asked by BOB 
social studies
what did the clergy receive from the lords?
asked by Anonymous 
history
workman is underbid in labor market What does this mean? I've looked up the word underbid: to bid less then but I still don't quite understand Could someone explain this
asked by Amy 
math
1/8 + x =1/5
asked by jas0n 
11th grade
how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very syuck and i need help please
asked by vince 
Physics
A springloaded toy gun is used to shoot a ball of mass m=1.5 kg straight up in the air. The spring has spring constant k=667 N/m. If the spring is compressed a distance of 25.0 centimeters from its equilibrium position and then released, the ball reaches
asked by Nikohl 
algebra
solve the systems of equations {4/7x+y=2/7 1/8x3/4y=11/4 a. the solution of the system is b. there are infinitely many solutions c. there is no solution
asked by Anonymous 
AED 201
HOW WILL YOU EVALUATE YOUR PROGRESS? WHAT WILL HELP KEEP YOU MOTIVATED TOWARD ACHIEVING THOSE GOALS?
asked by claudette 
math
expand x^(42x)
asked by tia 
college algebra
a bus driver wants to average at least 40 miles per hour on a 70 mile trip. if the first 35 miles takes the driver 1 hour what should be the lowest average speed for the second 35 miles?
asked by matt 
Microeconomics
Suppose a second nation has the following data. Plot the PPC, and then determine which nation has the comparative advantage in which activity. Show whether the two nations can gain from specialization and trade.
asked by Tasha 
PLEASE HELP
PLEASE ANSWER THE FRACTION 14 OVER 15  THE FRACTION 1 OVER 2. HURRY!
asked by BOB 
Chem
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?
asked by D 
Calculus
Find the derivative of f(x) = ln(48e3x − 11)
asked by Erika 
Chemistry
You receive two samples of a substance. After testing, it shows that one sample contains 88% oxygen by mass an 12% hydrogen. The second sample contains 94% oxygen and 6% hydrogen. Is it possible that the two samples are the same? Explain. thanks, I
asked by lisa 
math
the perimeter of a rectangle is 147 meters the length is 15 meters less than 5 times the width find the dimension
asked by jennifer 
Math  Geometry
Please help! Need to find the 6th and nth terms in this sequence  and solve for the rule or process. here's the sequence: 1,3,9,27,81 What is the process or formula to get the nth term in the sequence. Thanks!
asked by Daniel 
Algebra/Math
Can you check these for me. Directions: Find the slope of the line that passes through each pair of points. 1. (3,8) and (5,2) Answer: 10/8 2. (10,3) and (7,2) Answer: 5,17 3. (7,6) and (3,6) Answer: 9 4. (8,2) and (8,1) Answer: 0 undefined
asked by Karen 
Calculus
Find the derivative of y = 2√s7 + 13
asked by Erika 
Music
The musical movement that started in the mid1960s on the West Coast was the _____ movement. A. Folk B. Rock C.psychedelic D. progressive
asked by Lval 
math
these two rectangles are the similar, rectangle number one: the width is 42cm and the height is 27cm. rectangle two: the width is 56cm find x.
asked by tia 
trig
find all values of degrees in the set (o,2 pi) satisfying cos of degree over 3 equal to square root of 3 over two and cosdegree + 2sindegres=2
asked by Anonymous 
statistics
For a particular sample of 71 scores on a psychology exam, the following results were obtained. First quartile = 58 Third quartile = 86 Standard deviation = 8 Range = 50 Mean = 75 Median = 72 Mode = 74 Midrange = 55
asked by vanesa 
Math
A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, in what ratio should they divide it so that the man still rceives the same amount?
asked by AJ 
statistics
there are 100 males and 100 females in a club. 80 of the men and 10 of the women are scientists. what is the probability one person is chosen to interview p(female scientist)
asked by Anonymous 
College Chemistry
Draw an orbital diagram showing valence electrons and write the condensed groundstate electron configuration for Se3+
asked by KELLY 
Calculus
Find the derivative of y = (8+e^5x)^3
asked by Cat 
College Chemistry
Write the condensed groundstste electron configuration of the transition metal ion Mo3+
asked by KELLY 
Calculus
Find the derivative of f(x) = ln(48e^3x − 11)
asked by Cat 
science
how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very stuck and i need help please
asked by vince 
Physics
A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest. What speed does that mass have after being moved 2.0m?
asked by Tia 
physics
Consider a frictionless track as shown in the figure below. A block of mass m1 = 4.25 kg is released from A. It makes a head on elastic collision at B with a block of mass m2 = 10.0 kg that is initially at rest. Calculate the maximum height to which m1
asked by sam 
management
Does anyone why walmart does not have a formal mission statement or where I can find out why
asked by patiance 
business ethics
What advantages and disadvantages of Internet surveys?
asked by mike Gee 
Please Algebra 1
Roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many student tickets did Roberta sell? From this result, if the total cost of a student ticket was threefourths the cost of an adult ticket, and
asked by JJ 
MATH
WRITE DOWN THE VALUE OF (4XY)
asked by tia 
8th grade
What does charlie realize about himself when he takes the rorschach test on april 22?
asked by Sadie 
Chemistry
You receive two samples of a substance. After testing, it shows that one sample contains 88% oxygen by mass an 12% hydrogen. The second sample contains 94% oxygen and 6% hydrogen. Is it possible that the two samples are the same? Explain. thanks, I
asked by lisa 
US History
What are the advantages and disadvantages of moving from the state of Georgia to New York City? I know one disadvantage is that New York is a very expensive place so it's tough living there, and their weather conditions can be extreme, especially in the
asked by mysterychicken 
college
Q. A soccer ball is kicked from the ground. When it reaches a height of 5.74 m, the velocity is v=5.86i+7.50j m/s. a) Determine the maximum height that the ball reaches. b) Determine the total horizontal distance travelled by the ball. c) What is the speed
asked by N 
physics
"An unbaked curve has a radius of curvature of 75m. On a winter day, with snow on the road, the coefficient of static friction between the tires of the car and the road is .23. What is the maximum speed with which the care can safely negotiate the cure?"
asked by Anonymous 
english
I found 2 foil character in ROMEO AND JULIET can need one more please with (act and scene and line)thank for your help.
asked by marie 
trig
how to do the calculation while taking 'A' as 15 in the half angle formula used for calculating the value of sin 7.5 ?
asked by Anonymous 
Biology
25. If there are 12 chromosomes in an animal cell in interphase of the cell cycle, what is the diploid number of chromosomes for this organism? A) 6 B) 24 C) 36 D) 12 E) 48
asked by Bee 
Geometry
Use the Law of Detachment to write a valid conclusion for the given information. 1.If two angles are supplementary, then their measures have a sum of 180. 2.Angle X and Angle Y are supplementary. Would the conclusion be this? Thanks The sum of X and Y is
asked by Shadow 
chemistry
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)? i used (p1)(V1)/T1=(P2)(V2)/T2 (2.1)(.0165)/285.65=(1)(V2)/295.25 THE ANSWER I GOT IS .0335 i changed 16.5 to liters which is why its
asked by april 
Math
Just so I know I am understanding this, can you please let me know if I am doing this right? Simplify: 24u  6(8  4u) + 52 24u 48 + 24u + 52 48u + 4 Thanks!!!!
asked by Kate 
math
if cosA is 5/13 and tangent Ais 5/12 how do i find the sine
asked by hillary 
Physics
Suppose a circular platform is rotating at a constant rate of 24 rev/min. How far away from the centre would one need to stand in order to have an radial acceleration of 9.9 m/s2? Express your answer in cm.
asked by Sufian 
Chemistry
I conducted a simple titration experiment and i need to write how and why are the results reproducible can some one help me in answering this. Thankyou C.
asked by Charlie 
math
For each value of z*, find the cumulative probability P(Z< or equal to z*). (Round all answers to four decimal places.) z*=0 z*=0.3 z*=0.3 z*=1.84 z*=2.38 z*=2.78 z*=1.67 you may need to use the table for standard normal probabilities
asked by Kaylynn 
Math
Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 to x5 of square root of Sin(t)dt. Please help.
asked by Nick 
english
I'm doing an analysis on a class text and a self chosen related text and one of the things the sheet says to do is to identify and define the context of my related text. What does this mean?
asked by melissa 
math
Between 20 and 28 students signed up for the chess club. The students could not be divided exactly into groups of 2, 3, 4 and 5. How many students signed up for the chess club? Show your work
asked by Trish 
college/human services
I am writing a paper about the affect of political and technical aspects of planning and evaluation on a senior center. Can anyone help with links to what the political aspects are? I found some for the technical aspects and they relate to evaluations
asked by Mary 
Social studies
What were the economic, political, and social aspects of New Netherland, New Spain and New France?
asked by Marissa 
physical education
please correct me if i am wrong the body has 3 different joints: A. fixed or immovable joints B. slightly movable C. freely movable
asked by chelsea 
history
was the reign of terror necessary? what can we learn from it? pleasse help!!
asked by jamie 
math
one side of a right triangle is 8 cm.the hypotenuse is 3 cm.more than twice of the other side.what is the measure of the other side?illustrate using the pythagorian theorem
asked by jarlee 
physics
Q. A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3¡Æ above the horizontal from the very top of the mountain, lands at the foot of the mountain 9.37 km (horizontal distance) away. a) What initial speed
asked by Lyn 
Chemistry
In melting point determination, why shouldn't a substance be remelted? (i.e. why should we not remelt a substance that has previously been melted in a melting point tube?)
asked by ann 
chem
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)? i used (p1)(V1)/T1=(P2)(V2)/T2 (2.1)(.0165)/285.65=(1)(V2)/295.25 THE ANSWER I GOT IS .0335 i changed 16.5 to liters which is why its
asked by kellie 
English
Which sentence is correct? 1) This product is due for retest. or 2) This product is due for retesting.
asked by candy 
Physics
A wooden block and a lead ball are connected by a light string that passes over a frictionless pulley. The block has a mass of 6kg and the ball has a mass of 2kg. after they are released from rest, the block will slide along the wooden ramp. a.) which
asked by Sadie 
chemistry
A balloon is filled with 2.3 cm3 helium gas at 112.1 atm pressure. What will be the new pressure (atm) if the volume is changed to 44.7 cm3? P1V1=P2V2 (112.1)(.0023)=(P2)(.0447) the answer i got was 54.85 so would the answer be 54.85 atm?
asked by kellie 
reading
clue Nasty facial expression using these letters to answer question UNGGGIEMANM
asked by Anonymous 
chem 121
We did a lab separating out the components of a mixture. One of the lab questions is "The weight of naphthalene was obtained by weighing the collected solid. Was this an accurate weight of the naphthalene present in the original sample?" I don't know how
asked by Martha 
Math/Vectors
If a point on the surface of a sphere with its center at the origin has coordinates (9,4,6) how do you show the radius connecting the origin to this point as a position vector. Is it simply [9,4,6] or is it more complicated than that. Thanks.
asked by Kate 
physics
An unbanked curve has a radius of curvature of 75m. On a winter day, with snow on the road, the coefficient of static friction between the tires of the car and the road is .23. What is the maximum speed with which the car can safely negotiate the curve?"
asked by scott 
economics (game theory)
For anyone with experience working with game theories... 1.) Two animals are fighting over some prey. Each can be passive or aggressive. Each prefers to be aggressive if its opponent is passive, and passive if its opponent is aggressive; given its own
asked by jo 
chemistry
A 25.0 g piece of copper at 90.0 C is placed in 100.0 g of water at 20.0 C. What is the temperature (in C) of the water once the system reaches equilibrium? The molar heat capacity of copper is 24.5 J/(mol·K).
asked by erika 
Mathmetics
9:00 AM to 2:45 PM you have to write a mixed number for each time period in lowest from
asked by Lilly 
math
how do you show that line 3x+y2=0 is a tangent of the curve y=(4x3)(x2) and how to find the point of contact??
asked by Jack 
Photography
What's the difference between the setting of the enlarger height and focusing the image? Aren't both of the dealing with the light that shines onto the baseboard?
asked by Emily 
physics
a ball is dropped off a 20m high building, the ball weights 5 g. how long does it take to hit the ground and what is the instaneous speed of the the ball at each second of it's fall?
asked by m,ary 
english
foil is character who provides contrast to another character. I FOUND ONE IN (ACT1,SCENE 4 LINE 2728) ,(ACT 2 SCENE I LINE911)and I just found the 3 one (act1 scene1 line 6973) can check if is right ?thank you
asked by marie 
math
show that the curves y=2x^2+5x y=x^2+4x+12 y=3x^2+4x6 have one point in common and find coordinates??
asked by tod 
Algebra, explain how to please
Can someone explain to me how to solve 14=2/5(92b) It would be greatly appreciated thank you
asked by June 
Chemistry
Which has a larger radius, Mg or Mg+2? Explain why. Thanks ! I think its Mg+2 but im not sure why.
asked by jessica 
Math
How about this one? Simplify: (21k  3 + 4)  17k 21 + 3 + 4  17k 38k + 1
asked by Kate 
math
staright line y=x1 meets curve y=x^25x8 at the points A and B. the curve y=p+qx2x^2 also passes through ponts A and B. what are the values of p and q?? helpppppplease...thanks
asked by tommas 
HISTORY
please could someone help me answer this question why relations between britain and germany changed in the years 19361939? was it because britain didn't want to get involved with germany because they didn't want another war to start? im not sure what to
asked by kellie 
ETH 125
Religious discrimination against Muslims and Arabappearance people rose steeply in the United States after 9/11. Consider the differences between Arabs, Muslims, and Arab Muslim extremists and fundamentalists. What may be done to maintain the American
asked by Mandie 
chemistry
At 16°C a sample of ammonia gas exerts a pressure of 11.7 atm. What is the pressure when the volume of the gas is reduced to onefourth of the original value at the same temperature so the inital Temp=16 C initial Pressure. 11.7 final pressureunknown
asked by april 
chemistry
design an experiment which will allow you to produce exactly 12.5gr of pure dry Copper Hydroxide also need equipment required chemicals required step by step any limitations cautions
asked by jorge fuenzalida 
statistics
for a particular sample of 77 scores on a psychology exam, the following results were obtained: first quartile=44, third quartile= 71, standard deviation=6, range=45, mean=64,median=57, mode=32, midrange=60 a)according to chevyshev's theorem how many
asked by mary please show correct calculations 
drwls history
please could i say a huge thankyou you have helped me alot and i appreciate it thankyou again you are a star! :]
asked by kellie 
11th grade
what does the value of G=6.67e11 tell us about the force of gravity
asked by pk 
physics
A ramp 17.5 feet in length rises to a loading platform that is 3 1/3 feet off the ground. Find the angle that the ramp makes with the ground.
asked by Rebecca 
physics
A merrygoround in the park has a radius of 1.8 m and a rotational inertia of 900kgm^2. A child pushes the merrygoround with a constant force of 80 N applied at the edges and parallel to the edge. A frictional torque of 12 Nm acts at the axle of the
asked by Alyssa 
math
A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a micotunnelling machine. the cable will link points with coordinates A(18,12), B(8,1), C(3,4), and D(15,7), in a run beginning at D. if one unit on
asked by Ted 
Physics
A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. What is the force constant of the spring?
asked by Lauren 
Social Studies
What ideas convinced people to fight for the Continental Army?
asked by Ally 
Chemistry
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)? i used (p1)(V1)/T1=(P2)(V2)/T2 (2.1)(.0165)/285.65=(1)(V2)/295.25 THE ANSWER I GOT IS .0335 i changed 16.5 to liters which is why its
asked by APRIL 
Social Studies
A these statement about the goals of the labor movement in the 1800's and the barriors to achieving these goals
asked by Sam 
footprints
list two ways you can clam down or cool off.
asked by parampreet 
math
(e^x + e^x)/2=1
asked by KATELIN 
college chem
A balloon is filled with 2.3 cm3 helium gas at 112.1 atm pressure. What will be the new pressure (atm) if the volume is changed to 44.7 cm3? P1V1=P2V2 (112.1)(.0023)=(P2)(.0447) the answer i got was 54.85 so would the answer be 54.85 atm?
asked by kellie 
11th grade
a soccer ball is kicked with an initial velocity of 5.0 m/s in a direction of 30 degrees above the horizontal a. what are the initial components of the velocity? vix= viy= b. what are the components of the veloicty just before the ball hits the ground? vx=
asked by elana 
college algebra
Shondra wants to enclose a rectangular garnden with 240 yards of fencing. What dimensions for the garden will maximize its area?
asked by Samantha 
chem
The study of kinetics group 1: Temp: 12.6 C T(K): 12.6+273= 285.6 1/T(K): 3.50X10^3 this one is the x value Time: 816 sec Rate ®: 7.66 x10^6 LnR: 11.8 this is the y value group 2: Temp: 45C T(K): 45+273= 318 1/T(K): 3.14X10^3 this one is the x value
asked by chemistyr 
Grammar
Would it make sense to write : uphold a status quo of Africans
asked by Amy 
reading
clue using these unscramble letter: UNGGGIEMANM answer the clue question NASTY FACIAL EXPRSSION. The answer has two words. First word has four letters and the second word has seven letter. Two word answer.
asked by dewayne 
sophmore Precalc Please Help!!
(e^x + e^x)/2=1
asked by KATELIN 
PHYSICS
How fast is 65 mph in meters per seconds? (i just need the answer) thanks very much
asked by *Krista (its just a simple question on converting) 
Correct or not correct?:)
1. 5 1/3 + 3 2/3 = 8 3/3? 2. 8 1/5 + 4 3/10 = 12 1/2
asked by KayKay 
Physics  Coulombs Law
Two identical objects have charges 6.0*10^6 and 2.0*10^6 respectively. When placed a distance d apart, their force of attraction is 2.0N If the objects touched together, then moved to a distance of separation of 2d, what will be the new force between
asked by Anonymous 
economics
what would happen to the consumer spending and on the unempolymentrate if the U.S government were to increase personal income tax rates
asked by Roger 
english
act 1 secne 4 romeo and rosaline act 2 secne 1 Mercutio is foil for romeo act 1 secne 1 benvolio and tybalt
asked by marie 
math
how many times does a wheel turn in travelling 3km if a circumfrence of a wheel is 2m?
asked by Esin 
physics
does each of the two lenses used in a microscope produce a magnification of the object being viewed?
asked by andy 
Physics
A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)? I
asked by Alexis 
math
show that the curves y=2x^2+5x y=x^2+4x+12 y=3x^2+4x6 have one point in common and find coordinates??
asked by tod 
Computer Science
We are using Netbeans IDE for my class and i have no clue on how to write this program... Write a program to enter a score and a points possible for a test, computer the percent, display the percent to 1 decimal place and then display the letter grade (A
asked by K.C 
physics
A 7.0g bullet is fired into a 1.5kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12.3 cm. Find the initial speed of the bullet?
asked by john 
Algebra
Please let me know if I simplified this correctly. Simplify: 5w squared + 23(294w squared +9) 5w squrd + 23  29 + 4w squrd 9 1w to the fourth power + 15 Thanks!!!
asked by Erin 
Computer Visual Basics 2008
This questions is from Chapter 5, #54) Write a program to compute tips for services rendered. The program should request th person's occupation, the amount of the bill, and the percentage tip as input and pass this informaiton to a Sub procedure to display
asked by Lee 
physics
An unbanked curve has a radius of curvature of 75m. On a winter day, with snow on the road, the coefficient of static friction between the tires of the car and the road is .23. What is the maximum speed with which the car can safely negotiate the curve?
asked by scott 
Mathmetics got the answer just need steps!
Steeeeepz for 9 8\15 Plus 11 5\12
asked by Lily 
economics
For anyone with experience working with game theories... 1.) Two animals are fighting over some prey. Each can be passive or aggressive. Each prefers to be aggressive if its opponent is passive, and passive if its opponent is aggressive; given its own
asked by jo 
chemistry
What is the specific heat capacity of lead if a 18.9 g sample increased 12.9 C upon the addition of 31.5 J? The units are J/(gK)
asked by Anthony 
Math
can you help me on this problem? 15(4)+(1)
asked by Samantha 
technology
Why computers manufacturers constantly are taking out computers more faster?
asked by katy 
math
2X^2+3X+1 d^2+8d+7 2a^2+5a+3 3x^2x4 2n^2+n6 x^2+5x14 5x^22x7 7n^2+9n+2 3x^2+8x+4 7a^230a+8
asked by factoring! help! urgent!! :( 
physics
you are a pilot on an aircraft carrier. you must fly to another aircraft carrier, now 1,450km at 45 degres of your position, moving at 56 km/h due east. the wind is blowing from the south at 72 km/h. calculate the heading and air speed needed to reach the
asked by john 
Physics
A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. What is the force constant of the spring?
asked by Anonymous 
statistics
The heights of a large population of students have a mean of 60" with a standard deviation of 3". What is the mean of the resulting distribution of sample means for n =16?
asked by Audrey 
algebra
sarah has dimes and nickels which total $1.65. the number of nickels she has is 3 less than the number of dimes. how many of each does she have?
asked by smith 
Math
Hi everyone! May anyone please tell me how to tell how many zeroe's are required in your answer when moving the decimal points in converting metric units? Thank you very much! PLease help son, if possible, as I have a really big test coming up!
asked by Anonymous 
Physics
What physical phenomenom might produce emission spectra?
asked by jenny 
algebra
two planes take off from an airport at the same time and head in opposite directions at 260mph and 275mph respectively. in how many hours will they be 1605 miles apart?
asked by donny 
Chemistry
What is the maximum weight (in grams) that 15 party balloons, each filled with 2 L of helium, can lift at STP? You can assume the weight of the balloon rubber is negligible and the outside air can be treated as pure nitrogen.
asked by Erika 
Chemistry
Given one of the following solution: 50.00mL of 0.10M of K2CrO4 answer the following. 1. How do you prepare the solution? 2. What volume (mL) of your solution contains 5.00X10(4) moles of the solute? 3. What volume of your solution contains 1.00g of the
asked by Sue 
CHEMISTRY
A student needed to standardize a solution of NaOH which was approximately 0.125 M. The student carefully prepared the titration setup, but after 25 mL of NaOH was added, what was the pH of solution if initially flask contains 25 mL of 0.250 M HCl
asked by Maria 
maths
v = ax pie squared find the sqaure root
asked by steph 
physiology
If the mean PQ interval voltage is 1mV, and the peak of the R wave for lead I and III are 2mV and 5mV, what are the true values for R wave amplitude in these leads? a. 2 & 4mV b. 2 & 5mV c. 1 & 4mV d. 1 &7mV e. 1 & 5mV
asked by fino 
math 2nd grade
i am inside the path numbers 7,6,9,3 i am the difference of 2 numbers outside the path 7,6,9,3,what number am i
asked by sharise 
Math
Factor each expression 19a^2/a+1 times 4x^2y^2/x+y Here is what I got: (13a)(1+3a)/a+1 times (2xy)(2x+y)/x+y what am i doing wrong? The final answer is suppose to be 13a
asked by Monica 
micro economic
The sales tax rate applied to all purchases within a state was 0.04 (4 percent) throughout 2006 but increased to 0.05 (5 percent) during all of 2007. The state government collected all taxes due, but its tax revenues were equal to $40 million each year.
asked by Anonymous 
Physics
A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and q (lower left corner). The net electric field at the (empty) upper right
asked by Jerry 
US History
I need help answering this: Historians have used the terms "robber barons" and "captains of industry" to describe the powerful industrialists of the late 1800s. Compare the two points of view reflected by these terms and which do you think is more
asked by mysterychicken 
computer science
How would you write this program? We are using Java in Netbeans IDE.. Write a program to enter the year (ex 2004) and month number (112) then compute the number of days in that month. Example Enter the Year: 2004 Enter the Month: 2 There are 29 days in
asked by Anonymous 
Math
how would you factor this expresssion I'm so confused. Thank you x^34x^2+3x/x+2 times (x^23x)
asked by Monica 
11th grade
a 65kg diver jumps off of a 10m tower. find the diver´s velocity when he hits the water?
asked by caero 
Science
What are two potential hazards with oil use?
asked by June 
Math Last One
9 8/15 + 11 5/12 please help me real quick it's my last one!
asked by KayKay 
Food
What are the exact chemicals found in raw ground beef?
asked by AL 92 
English
What does foreshadowing mean?
asked by Billy 
Biology
If there are 12 chromosomes in an animal cell in interphase of the cell cycle, what is the diploid number of chromosomes for this organism? A) 6 B) 24 C) 36 D) 12 E) 48
asked by Bee 
human geography
discuss quota systemswhat is it, why? purpose? is it still in effect? what forms?
asked by leslee 
Quadratic and exponential sequences
I need to set up a chart to find the 6th and nth terms in this sequence  and soleve for the rule or process. here's the sequence: 1,3,9,27,81 Thanks!
asked by Daniel 
5th grade
Identify the pronouns in each sentence. Then decide if each is nominative (N), objective (O), or possessive (P). Write your answer according to the following example: Q: My favorite actor is better than yours. A: My; P, yours; P 1. Why wasn't he invited to
asked by bryan 
algebra
two trains leave at the same time from two different stations 284 miles apart, traveling toward each other at 33 mph and 38 mph respectively. how long will it take for them to meet?
asked by john 
math grade 11
i need help with this quretsion ; i don't know if im right, and i dontknwo what do next question expand and simplfy: 4√7(2√3 + 3√6  √7) my work = 8√21 + 12√42 4√49 please help me
asked by priya