Questions Asked on
October 23, 2010

Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pHneutral? Al(ClO4)3Acid LiClNeutral KClO2BAse C6H5NH3NO2Acid CH3NH3BrAcid KClNeutral NaClOBase NH4ClOAcid Fe(ClO4)3Acid C2H5NH3NO3Acid Is this right?
asked by Anonymous 
chem
For the elementary reaction NO 3 + CO → NO2 + CO 2 the molecularity of the reaction is __________, and the rate law is rate = __________. A) 2, k[NO 2][CO 2] B) 2, k[NO 3][CO]/[NO2 ][CO 2] C) 4, k[NO 3][CO][NO 2][CO 2] D) 4, k[NO 2][CO 2]/[NO 3][CO] E)
asked by JES 
chemistry
for the reaction: c3h8+5o2=3co2 +4h2o how many moles of o2 will be produced in the complete combustion of 0.75 moles of c3h8? I think the ans is 2.25 moles of co2, but i am not sure because i still don't think I understand this fully please help
asked by Lillian 
chemistry
strontium nitrate reacts with potassium iodate. What is its molecular,ionic and net ionic equations?
asked by Stephanie 
physics
Mass mA rests on a smooth horizontal surface, mB hangs vertically.If m_{\rm{A}}=13.0 kg and m_{\rm{B}}=3.0 kg in the figure , determine the magnitude of the acceleration of each block.
asked by Anonymous 
Chemistry
Which of the following anions act as weak bases in solution? ClO4 ClO C2H3O2 Cl I think its ClO4 and Cl
asked by Anonymous 
Statistics  M/C
14. The marks on a statistics test are normally distributed with a mean of 62 and a variance of 225. If the instructor wishes to assign B’s or higher to the top 30% of the students in the class, what mark is required to get a B or higher? a. 68.7 b. 71.5
asked by Rhea 
physics
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to six times her weight as she goes through the dip. If r = 20.0 m, how fast
asked by Bella 
Physics
A skier goes down a slope inclined at 25 degrees. Her mass including equipment is 60.0kg. a. What is her acceleration if friction is negligible? b. What is her acceleration if friction is 45.0 N?
asked by Adam 
Science
which of the following are predicted by the molecular orbital model to be stable diatomic species N22, O22, F22
asked by Joseph 
Math
There are 10 packets of ham. Of the packets, 2/5 are turkey ham. Each packet of turkey ham weighs 1/3 pound. What is the total weight of the turkey ham?
asked by Jax 
Physics
A 0.130 kg baseball, traveling 35.0 m/s, strikes the catcher's mitt, which recoils 11.0 cm in bringing the ball to rest. What was the average force (in newtons) applied by the ball to the mitt?
asked by Adolfo 
Physics
A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.90 s. How high is the cliff?
asked by Jen 
chemistry
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1 MHz =10^6 Hz}. Calculate the broadcast wavelength of the radio station 98.70 FM. can someone please explain this question for me, i tried several
asked by risha 
AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag
asked by Nardos 
Physics
A 0.130 kg baseball, traveling 35.0 m/s, strikes the catcher's mitt, which recoils 11.0 cm in bringing the ball to rest. What was the average force (in newtons) applied by the ball to the mitt?
asked by Adolfo 
Chemistry
I am doing a lab online and have no clue on how to get started with the following questions? Please Help me! 1. Calculate and record the following (in grams): (a) mass of NaCl by subtraction of other components: (b) measured mass of NaCl after boiling away
asked by Melissa 
physics
A boy sledding down a hill accelerates at 1.30 m/s2. If he started from rest, in what distance would he reach a speed of 8.00 m/s?
asked by Anonymous 
chemsitry
c. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following values: The standard enthalpy of formation of gaseous carbon dioxide is
asked by Nora 
physics
When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure P8.16a. The total gravitational force on the body, Fg, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the
asked by rabhimself 
ECE Home,School, and Community
Describe three issues related to role confusion that a teacher may feel or communicate
asked by Sharon 
Physics
An engineer is designing a runway for an airport. Several planes will use the runway and the engineer must design it so that it is long enough for the largest planes to become airborne before the runway ends. The largest plane accelerates at 3.30 m/s2 and
asked by grace 
AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag
asked by Nardos 
math
Carla spends 6/4 hours exercising everyday for 12 days.She spends 1/2 of her exercise time everyday lifting weights.How much time does Carla spend lifting weights during the 12 days? I think the answer is this: 6/4hrs.=360min. The answer is 90 hours or 540
asked by Jax 
Chemistry
Which of the following anions act as weak bases in solution? ClO4 ClO C2H3O2 Cl I think its ClO4 and Cl
asked by Anonymous 
Statistics  M/C
In a version of the game of roulette, a steel ball is rolled onto a wheel that contains 19 red, 19 black and 2 green slots. If the ball is rolled 25 times, the probability that it falls into the green slots two or more times: a) is 5%. b) is 35.8%. c) is
asked by Rhea 
Chemistry
Which has a larger radius, the oxygen atom (O) or oxygen ion (O2) ? Explain. Isn't the ion bigger because negative ions are bigger than atom's radius. im not sure though.
asked by Sheryl 
Physics
A brick of mass 1.0 kg slides down an ice roof inclined at 30 degrees with respect to the horizantal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 0.90s later? Ignore friction
asked by Lisa 
Physics
A crate has a mass 24 kg. What applied force is required to produce an acceleration of 3m/s^2 if the frictional force is 90 N.
asked by Adam 
Chem
Would you please tell me if these are right? A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be the pressure if the helium is compressed to 125 ml (t and n are constant) I got 1703 mm of Hg A 75.0 ml sample of oxygen has a
asked by Jason 
Physics
If a car starts from rest and travels for 5.0 seconds with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes for 3.0 seconds, causing a uniform acceleration of  2.1 m/s2. a) Sketch the velocity vs. time graph for the car and paste
asked by grace 
Science
(a) Given that the energy released per fission of 235U nucleus is 200MeV, calculate (i) the number of fissions and (ii) the amount of energy (in joules) available if 50g of 235U is completely fissioned. (b) A widespread application of nuclear physics is
asked by Akkie 
calculus II
Find the length of the entire perimeter of the region inside r = 11 sin (theta) but outside r = 2
asked by Anonymous 
Art
Choose a contemporary painting, sculpture, or piece of found art that captures your interest. Consider what it is that captures your attention and explain why viewing this piece is a valuable experience. Questions to consider are: 1) What best describes
asked by sweet 
physics
A child is twirling a 0.0100 kg ball on a string in a horizontal circle whose radius is 0.118 m. The ball travels once around the circle in 0.460 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, does the centripetal
asked by Fred 
Physics
If a car starts from rest and travels for 5.0 seconds with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes for 3.0 seconds, causing a uniform acceleration of  2.1 m/s2.
asked by Bob 
physics
Object 1 has a mass m1 and a velocity vector v 1 = (2.87 m/s)xhat. Object 2 has a mass m2 and a velocity vector v 2 = (3.06 m/s)yhat. The total momentum of these two objects has a magnitude of 18.6 kg · m/s and points in a direction 66.5° above the
asked by aok19 
7th grade Physics
Give 2 examples of force pairs when you do your homework?
asked by Alivia 
Physics
A car travels at a constant speed around a circular track whose radius is 2.9 km. The car goes once around the track in 380 s. What is the magnitude of the centripetal acceleration of the car?
asked by Angela 
Math  Maxima and Minima
The height, h, in metres, of a ski ramp over a horizonatal distance, x, in metres, is given by h(x)=0.01x^30.3x^2+60 for the interval 0 less than or equal to x less than or equal to 22. a) Find the vertical drop from the top of the ramp to the lowest
asked by Anonymous 
Finance
Suppose you own a stock in a company. The current price per share is $25. Another company has just announced that it wants to buy your company and will pay $35 per share to acquire all the outstanding stocks. Your company’s management immediately begins
asked by Husain 
Chemistry
for the reaction: c3h8+5o2=3co2 +4h2o how many moles of o2 will be produced in the complete combustion of 0.75 moles of c3h8?
asked by Lillian 
Physics
A 3.0 kg object, moving with a constant velocity of 3.0 m/s, is acted upon by a force of 11 N in the direction of the motion for 4.0 s. What is the velocity (in meters/second) of the object at the end of this time?
asked by Adolfo 
economic help please
whats the effect of current economic on foreign companies and factory closures and what do they also mean? plus i need articles to write about each one of them... Im having a hard time looking for the right one
asked by sam 
Physics
A 1030 kg car is pulling a 360 kg trailer. Together, the car and trailer have an acceleration of 2.07 m/s2 directly forward. How do you find net force on the car and trailer?
asked by James 
physics
Two identical cars are traveling at the same speed. One is heading due east and the other due north, as the drawing show. What is true regarding the kinetic energies and momenta of the cars?
asked by jo 
Physics
What equations should I use to calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5800 km above the earth's surface?
asked by Adolfo 
english
Can someone explain what is the difference between a connotation and denotation?
asked by Joe 
physics
If the coefficient of static friction is 0.350, and the same ladder makes a 64.0° angle with respect to the horizontal, how far along the length of the ladder can a 71.9kg painter climb before the ladder begins to slip? The same ladder is 46.7 Newtons in
asked by heather 
Finance
Your 401 (k) Account at East Coast Yachts You have been at your job for East Coat Yachts for a week now and have decided you need to sign up for the company’s 401(k) plan. Even after your decision with Sarah Brown, the Bledsoe Financial Services
asked by Kelly 
physics
A small first aid kit is dropped by a rock climber who is descending at a constant velocity of  1.3m/s. a) Sketch the velocity vs. time graph for both the climber and her first aid kit and paste your sketch in the space below. b) After 1.5 seconds, what
asked by grace 
Chemistry (Organic)
What is the molecular formula for an alkane with 12 carbon atoms? (Type your answer using the format C2H4 for C2H4.) so this problem might be easy because its the first question on my webassign but my teacher hasn't started teaching this yet but it is up
asked by Sarah 
Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pHneutral? Al(ClO4)3Acid LiClNeutral KClO2BAse C6H5NH3NO2Acid CH3NH3BrAcid KClNeutral NaClOBase NH4ClOAcid Fe(ClO4)3Acid C2H5NH3NO3Acid Is this right?
asked by Anonymous 
chemistry
there are 3 naturally occurring stable isotopes of oxygen:O16,O17, O18. there are 2 naturally occurring stable isotopes of hydrogen: H1, H2.how many different water molecules can be made using the various combination's of all the isotopes of hydrogen
asked by Navroz 
Physics
There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.
asked by Angela 
Statistics
1. A spinner has four outcomes Three outcomes have the same probability and the fourth is half as likely. 2. A spinner has three outcomes, each half as likely as the one before it.
asked by Alex 
chemistry
would it be: O.2576/0.7086=0.3635 0.3635 X 87.65= actual yield? A 2.30mL sample of methane gas (density 0.112 g/cm3) was completely combusted. If the percent yield of each of the combustion products is 87.65%, calculate the actual yield in grams of carbon
asked by gary 
physics
A car of mass 1600 kg is traveling without slipping on a flat, curved road with a radius of curvature of 38 m. If the car's speed is 15 m/s, what is the frictional force between the road and the tires?
asked by john 
Calculus 2
I am having so many problems with these volume problems, 1. Find the volume of a the solid obtained by rotating the region enclosed by: x = 2y and y^3 = x with y>0 about the x axis 2.Find the volume of cone of height h = 250 and a circular base with radius
asked by J 
college
Do some research into why the United States has been so slow to adopt metric measurements. What problems does this cause for the United States? What benefits might it bring the United States? How might you resolve the gap between the United States'
asked by ca 
CHEMISTRY
8) The reaction CH3 N≡C → CH3 C≡N is a firstorder reaction. At 230.3°C, k = 6.29 x 10^4 s^ 1. If [CH3 N≡ is 1.00 x 10^3 initially, C] [CH3N ≡ C] is __________ after 1.000 x 10^3 s. A) 5.33 x 10^4 B) 1.00 x 10^6 C) 4.27 x 10^3 D) 2.34
asked by JES 
Physics
A 4.5 104kg space probe is traveling at a speed of 15000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 3.0 105 N over a distance of 2400 km. What is the final
asked by Xavier 
Stats
A test has 15 true or false questions and 10 multiple choice questions (each with 4 choices). All questions are weighted equally. Jack has not studied at all for the test and randomly guesses. 1. What is the probability that Jack gets 96% on the test? a.
asked by Rhea 
CHEMISTRY
1.0 g of fat has 9kcal/g, while 1.0 g of carbohydrates and protein have 4kcal/g each, determine the total amount of Calories (kcal) in 1 serving if that serving contains 20.0 g of carbohydrates, 20.0 g of protein and 15.0 g of fat
asked by amber 
physics
A daredevil leaves the end of a ramp with a speed of 32.0 m/s if his speed is 29.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? how do i do thiss?
asked by Maddy 
math
Given: segment AC and segment BD bisect each other at E prove: E is the midpoint of segment RS i don't know if you will be able to visualize the picture but just incase someone is i really need help on the proof for this one. Picture: two(supposedly
asked by rebekah 
Math
For every left handed person, there are 4 right handed persons. If there are 30 students in the class predict the number of students who are right handed.
asked by Kory 
Chem
Please tell me if these are right. How many grams are needed to obtain 1.5 moles of magnesium oxide? I got 60grams is this right? Write a balanced equation for the reaction of the magnesium and the oxygen including their physical states. I got 2Mg=Mg2+O2?
asked by Jason 
chemistry
if k2O, SrO, and Al2O3 are all correct formulas, predict the formulas for the oxides of Rb, Mg, & Ga. i think the answers are Rb2O, MgO,& Ga2O3 but im not sure why
asked by Kim 
physics
Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.
asked by Maddy 
accounting
John borrows $150,000. The terms of the loan are 7.5% over the next 5 years. It is important to note that he makes annual rather than monthly payments. Construct a loan amortization schedule that shows the 5 payments of John's loan. EXCEL TEMPLATE
asked by sweet 
Maths
A certain number is halved, then increased by 3. The result lies between 5 and 7. Between which two values does the number lie? Write an inequeality for this?
asked by Jannie 
Chemsitry
What is the name of the following ion compund. SrO Cr1I2
asked by Anonymous 
physics
There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.
asked by Angela 
physics
A power boat of mass 465 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assumecontrary to factthat the resistive force due to the
asked by Xavier 
chemsitry
A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the
asked by Nora 
science
Give the condensed structural formula for 1butanol. (Type your answer using the format CO2 for CO2.)
asked by Ashley 
Stats
Twentythree students wrote a statistics examination having a maximum of 50 marks. The mark distribution is given in the following stemandleaf diagram: 0 9 1 25 2 01335889 3 001369 4 02248 5 0 Q1 is equal to: a) 15 b) 21 c) 23 d) None of the above THE
asked by Rhea 
chemistry
b. The decomposition reaction may be written in this form: C12O36H20N12 (s) → 12CO2 (g) + O2 (g) + 6N2 (g) + 10H2O (l) In the enthalpy diagram below, the arrows represent standard enthalpy reactions. (3) denotes the standard enthalpy of decomposition of
asked by Anonymous 
chemistry
A 2.30mL sample of methane gas (density 0.112 g/cm3) was completely combusted. If the percent yield of each of the combustion products is 87.65%, calculate the actual yield in grams of carbon dioxide gas.
asked by gary 
statistics, are my calculations correct?
classify the following as discrete or continuous random variables: a) the time it takes to run a marathon i think that it is discrete b) the number of fractions between one and two i think that it is discrete? c) a pair of dice is rolled and the sum to
asked by mary please check calculations. 
Finance
You purchased a $1,000 five percent coupon bond that matures in 10 years. How much would your bond be worth if interest rates fall to 4% the day after you purchase the bond? What would the bond be worth in one year if interest rates fell to 4% at that
asked by sweet 
9th
The electricity costs of a business increased from $18,000 one year to $19,000 the next. To the nearest whole percent, what was the rate of increase?
asked by michelle 
Calculus
int(dx/(x^2+9)) u = x/3 Use the indicated substitution (above) to evaluate the integral. Confirm answer by differentiation. Okay, so I found that du/dx is 1/3. dx is 3du. Just by looking at the integral I can tell this is some form of tan^1(x), if we
asked by Nikki 
Chemistry
N_2+3H_2>2NH_3 How many grams of H_2 are needed to react with 3.20 grams of N_2
asked by Doug 
phy
A 12N force is applied to a 20kg door If a frictional torque is present what will be the angular acceleration of the door The door is 80cm wide and I=1/3ml^2.
asked by ami 
Physics
Two students are on a balcony 29.4 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at 29.4 m/s . The second ball just misses the balcony on the way down.
asked by grace 
poetry
I incline in the wrong direction a voice cries faint as in a dream from the belly of the wall Is "A voice cries faint as in a dream" an example of a metaphor? if so, why?
asked by Joe 
Finance
A firm has return on equity of 15 percent, earnings before taxes of $30,000, total asset turnover of .80, a profit margin of 4.5 percent, and a tax rate of 35 percent. What is the return on assets?
asked by Husain 
physics
A 49.7cm diameter disk rotates with a constant angular acceleration of 2.7 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive xaxis at this
asked by Anonymous 
Physics
The mass of glider X is 0.2kg and its velocity is 1.5m/s to the right. The mass of glider Y is 0.3kg and it is stationary. When glider X collides with glider Y they move off together. Calculate the velocity of the gliders after the collision and give their
asked by PAO 
Algebra II
Jack usually mows his lawn in 6 hours. Marilyn can mow the same lawn in 7 hours. How long would it take if they were both working together?
asked by Anonymous J 
physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 32 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 140 m), the block swings toward
asked by Fred 
Physics
A force F=180 N pulls a crate at a 60 degree angle on a rough surface. The weight of the crate is 296 N and the friction force between the crate and the surface is 90 N. What state of motion might the crate be in?
asked by Lisa 
statistics/probability
in testing a new drug. researchers found that 20% of all patients using it will have a mild side effect. a random sample of 14 patients using the drug is selected. find the probability that: a) exactly three will have mild side effects. b) at least four
asked by mary please check calculations. 
general chemistry
A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the
asked by Nora 
history political science
Hi everyone =D thanks in advance to those who helped me. I am in need of a format or outline of some kind to help me write my 56 page term paper that is based on three books comparing and contrasting the themes within all three of their historic concerns
asked by Allison 
Statistics
19. George got 70% on an economics exam where the mean was 55% and the variance was 9. If a professor wishes to change the distribution of marks so that they have a mean of 70% and a standard deviation of 5, what will George’s new mark be? a) 95% b) 85%
asked by Rhea 
physics
A daredevil leaves the end of a ramp with a speed of 32.0 m/s if his speed is 29.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? how do i do thiss?
asked by Maddy 
drawing
what is the probability of drawing a diamond face card on the fifth draw from a standard deck of 52 cards, knowing that the first four draws removed four kings from the deck
asked by Anonymous 
college
Here are heart rates for a sample of 30 students before and after a class break. At α = .05, was there a significant difference in the mean heart rate? (a) State the hypotheses. (b) State the decision rule and sketch it. (c) Find the test statistic. (d)
asked by ping 
English
Can you please check these sentences for me I'm not sure of. Thank you very much. 1) My sister and I are high school students.I want to play in a football team but my parents don't want me to. 2) I don't study French at my school. I'm of white skin (or
asked by Franco 
8th grade
Can you help me to make a speech about 'the importance of recycling' ?
asked by fani 
mathematics
the average age of a family of six is 25 years.The average age of the four children is 15 years.If the father is 2 years older than the mother,calculate the age of the mother.
asked by Iby 
english
I forgot to include the following statements. I really hope you can have a look at them, too. 1)I have football training twice a week. It lasts two hours and is very wearisome. 2)I like playing football very much (and not: I like very uch playing..) 3)I
asked by Franco 
math
4^3+4^4+4^5+....+4^(n)=4(4(n)16) all over three *Note: the entire right hand side of the equals sign is over three
asked by Sarah 
Algebra
Find the polynomial for the perimeter and the area, b+2,b.
asked by Jackie 
Maths
Two sides of a triangle are 10 cm and 15 cm. What is the range of possible lengths for the third side? Write inequality?
asked by Jannie 
AP CHEM
HIO3 + FeI2 + HCl > FeCl3 + ICl (in acidic solution) Show and label the two balanced halfreactions (oxidation and reduction). Add H2Os, H+s or OHs as needed.
asked by dylan 
Physics
A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 103 m. The mass of the motorcycle and driver is 347 kg. (a) Find the magnitude of the centripetal force that acts on the cycle. (b) Find the
asked by Anthony 
11th grade english
What is a good thesis statement on the destruction of world due to food we eat for my critical analysis paper?
asked by Aisha 
English
I forgot to include the following 4 statements. I hope you can correct them, too. Thank you. 1) Friendship is very important to (also "for") me. 2) In the future I'd like to become a chemist. I want to graduate and go to live abroad, maybe in Asia or
asked by Franco 
Finance
Consider the following scenario: John buys a house for $150,000 and takes out a five year adjustable rate mortgage with a beginning rate of 6%. He makes annual payments rather than monthly payments. Unfortunately for John, interest rates go up by 1% for
asked by sweet 
physics
an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of
asked by bolt 
Math
I need help with this problem: 6/v1=6/(v3) I tried working it out like this: >>>6/v1=6/(v3) >>>(6v)/v= 6/(v3) I cross multiplied to get: >>>3v+18v^2= 6v >>> 3v+18v^2=0 ^Here's where I became stuck. I would appreciate it if you would point out
asked by Yaya 
chem
help with this problem pease Metal Specific Heat (J/gC) Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l) 4.184 C2H5OH(l) 2.46 A piece of metal at a temp of 101.0oC and a mass of 86.0 g is dropped into a beaker of water containing 75.0
asked by amber 
medical law and ethics
You are a health care professional working in a large office. Your administrator has asked you to prepare a poster summarizing the public duties of the physician as specified by law. The poster will be set up in the waiting room and will have a heading "We
asked by lisa 
adult education
a=14% protein in soybean b=7% protein in cornmeal how many pounds mixed together to get 280lb mixture that is 9% protein a= ____lbs soybean b= ____lbs cornmeal Thank you from the bottom of my heart,
asked by Cami 
physics
The speed time graph of a particle moving along a fixed direction is shown below.obtain the distance travelled by the particle between t=0 and t=10 s.what is the average speed of the particle over this interval?
asked by soya. 
maths
Find the equation of the normal to the curve y=2x^2+3x+4 which is perpendicular to the line y=7x5
asked by Adam 
statistics
A random variable may assume any value between 10 and 50 with equal likelihoods. (Uniform distribution) Determine the following values for this probability distribution: a) b) c) f(x) = d) P(x < 25) e) P(x > 15) f) P( 12 < x < 30)
asked by Anonymous 
Chemistry
I still don't understand how to do this problem; grams/molar mass I understand, but I need to see the steps CLEARLY. 43. How many moles are in 25.0 grams of potassium? Show your work and round your answer to the appropriate number of significant figures.
asked by mysterychicken 
algebra
A 35in. t.v. set has a width of 28in. What would the hight of a 35in. t.v. set?
asked by Robert 
algebra II
Convert to decimal notation 8.88 * x10^7
asked by Spencer 
matt
Media Services charge $30 for a phone and $20/month for its economy plan. The equation c=20t+30 describes the total cost, c, of operating a Media Services phone for t months. The total cost for 7 months of service is? If customer has only $80 available,
asked by t.o. 
Maths
A taxi driver averages $15 per trip. He pays $150 per day to the cab company to hire the taxi. How many trips must he make in a day to have at least $120 at the end of his shift? (Ignore the cost of fuel.) Write inequality?
asked by Jannie 
algebra
In a triangle, find the length of the side not given, B=1,c=~17
asked by John H. 
algebra II
If a pro basketball player has a vertical leap of about 25 inches, what would his hang time be? Use V=48T^2 Answer:_______seconds.
asked by Smith 
chemistry
If you have 1.90 moles of H_2 How many grams of NH_3 can be produced?
asked by Doug 
physics
How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 2900 m?
asked by bill 
physics
A chair lift holding a 100 kg man rises 5 meters in height in 10 second time period. Ignore the weight of the chair and related machinery and answer the following: What is the weight (force exerted by his mass) of the man, in Newtons?
asked by Anonymous 
Algebra
solve and graph: x2y=2 x=2y=10
asked by Armond 
English
I have some doubts concerning a few sentences. I really hope you can check them. Thank you very much in advance. 1)I did rhythmic gymnastics two years ago but I had to give it up to prepare for (?) my schoolleaving exam. 2)My favourite book is "Heart of
asked by Franco 
Writing
I'm trying to cite an article from edu.udym. Should I put edu.udym on the citing or should I add the dot com to the end?
asked by Elizabeth 
economic help
whats the effect of current economic on foreign companies and factory closures and what do they also mean? plus i need articles to write about each one of them... Im having a hard time looking for the right one
asked by sam 
chemistry
How do you know the number of ions present in a compound.
asked by help 
physics
A person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 25.0° above the snow. The tension in the rope is 85.0 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension
asked by Xavier 
chemsitry
b. The decomposition reaction may be written in this form: C12O36H20N12 (s) → 12CO2 (g) + O2 (g) + 6N2 (g) + 10H2O (l) In the enthalpy diagram below, the arrows represent standard enthalpy reactions. (3) denotes the standard enthalpy of decomposition of
asked by Nora 
science
what will you measure to record data of the experiment of mixing water and sugar/salt dissolved in hot water?
asked by tee 
English
Please expedite in providing all necessary documents. Is this sentence grammatically correct?
asked by ann 
Math
a=2a/(a5) How do I work this out?
asked by Ana 
math axis of symmety
What is the equation of the axis of symmetry of the graph with the order pairs of (2,0) and (6,0). How would I do this since? I thought perhaps I could do 2+__=6 which would be 8 then 8/2 =4 so x=4 my brother says I'm suppose to do 62=4/2=2 so x=2 who's
asked by carrie 
algebra I
Find a number whose square root is 24 more than 5 times the number. How do I set up this problem?
asked by Dylan 
physics
A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 103 m. The mass of the motorcycle and driver is 347 kg. (a) Find the magnitude of the centripetal force that acts on the cycle. (b) Find the
asked by Anthony 
Physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 32 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 140 m), the block swings toward
asked by madeline 
math
45 mi/hr = ______ft/sec. Can you show me how to do this? Dimensional analysis?
asked by Kory 
physics
A small stone of mass m is stuck on the periphery of a wheel of radius R rolling along the xaxis with a constant speed v. The centre of the wheel was at x = 0 at time t = 0, and stone was on the ground at that time. Find the angular momentum of the stone
asked by anil 
college
what type of study can be produced for : Management of pain in postsurgical patients
asked by maryjane 
college English Lit
Can you help me write EITHER 250word+ paragraph or 10 lines in iambic pentameter outlining your version of a Faustian bargain?
asked by Twin 
Algebra II
Identify the degree of each term of polyrnomial and the degree of the polynromial 0f 8x^3+8x^2+3x+4. degree of the first term___________. degree of the second tern___________. degree of the third term___________. degree of the fourth term____________.
asked by Rick 
Maths
Our team scored 115 points in the last 5 football games. How many points must we score in the next 5 games so our average points per game is greater than 25? Write inequality?
asked by Jannie 
Maths
A rectangle has length 2y and width y+ 2. Its perimeter is less than 50 cm. What are possible values for y ? Write inequality?
asked by Jannie 
Statistics
A spinner has three outcomes, each half as likely as the one before it. How can I set this up?
asked by Alex 
Math  point on the graph (check +help)
Determine the coordinates of the point on the graph of f(x)=sqrt(2x+1) where the tangent line is perpendicular to the line 3x+y+4=0 I do not seem to get the answer... I find the first derivative of f(x0 and equate it to the value of the slope from the
asked by Anonymous 
math 11
The axis of symmetry of a graph is the vertical line x=5. One of the xintercepts is (11,0). What is the other xintercept. Explain how to do this either by showing work or how to enter it into the TI83Plus. Up until now I've had equations to work with so
asked by Juliet 
college
describe why it is important to consider each domain in the study of Adult Development?
asked by sue 
physics
an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of
asked by bolt 
Math
the perimeter of a rectangle is 300 feet. what is the width of the rectangle of maximun area?
asked by Anonymous 
Math Approximation fractions
I really don't understand how to determine which number is greater and which one is smaller can anyone help auorlda ?
asked by Liz 
Physical science
A chair lift holding a 100 kg man rises 5 meters in height in 10 second time period. Ignore the weight of the chair and related machinery and answer the following: How much power is required, in Watts?
asked by Dina 
Physics
Suppose that the coefficient of kinetic friction of the rubber of a car tire and the street is Uk = 0.8. What is the deceleration of the car on a flat street if the driver brakes sharply, so all the wheels are locked and skidding?
asked by Lisa 
Chemistry
Chlorine and phosphorus FOrmula ___________ ? Name ________ , _________ ?
asked by Anonymous 
science
In addition to the salt/sugar question, what will you use and what unit of measure will you place on the y axis of the bar graph for quantitative measurement? Also, which factors are controlled to make the experiment fair?
asked by tee 
Journalsim
What is a GREAT way to start off my first paragraph of my article about "Habitat for Humanity"?
asked by Ah 
Mathematics for Liberal Arts
Using a Standard deck of 52 cards, what is the probability of drawing four aces in a 5card hand?
asked by Sasha 
6th grade math
Can you recommend a site that will show how to divide whole numbers by fractions or give me an example.
asked by Lynn 
stata
What is the probability that a person selected at random from data will be male?
asked by shiela 
Progamming
This is the Problem, I just want to get a little help on this problem. Suppose automile repair customers are billed at the rate of $35 per hour for labor. Also, costs for parts and supplies are subject to a 5% sales tax. Write a program to display a
asked by Lee 
accounting psy100
What parts do they agree or disagree with? How does Rogersâ€™ view compare with that of Maslow and other humanists?
asked by Patrice 
accounting
You purchased a $1,000 five percent coupon bond that matures in 10 years. How much would your bond be worth if interest rates fall to 4% the day after you purchase the bond? What would the bond be worth in one year if interest rates fell to 4% at that
asked by sweet 
algebra
If the sides of a square are lengthend by 7cm, the area becomes 121cm^2. Find the length of a side of the orginal square.
asked by Shane 
AED 201
I am looking for information on the use of technology in school. I need the 1st and 2nd event from 1980, 1990 and 2000. Ive been searching since yesterday. I do not want the answers, just pointed in the right direction. I guess im not searching right or
asked by Ann 
statistics/mean and standard deviation
find the mean and standard deviation in the following probability distribution x 1 2 3 p(x) 0.2 0.6 0.2 *i think that the mean is 2 but am lost after that when it comes to the standard deviation. please show work and calculations. the more i work with
asked by mary please check calculations. 
Chemistry
What would be a good hypothesis for a lab in which the purpose is to identify the differences between chemical and physical changes.
asked by Jennifer 
8th grade
what type of liquid will cause apenny, paperclip,and a sewing needle to rust the fastestes
asked by hannia 
Finance
What is the present value of $10,000 paid out at the beginning of each of the next two years using an interest rate of 10%?
asked by Therese 
science
Do plants grow better with tap water or distilled water?
asked by Andy 
poetry
How does the poem: "A dream within a dream" by: Edgar Allen Poe, correspond to the PreCivil war/American Culture?
asked by Attalah Higgs 
science
How often do you water basil?
asked by Jeff 
chemistry
Chart of energy changes dissolving MgSO4, NaOH and CaCl2.
asked by ridwan 
math
How are the ideas of subsets and proper subsets used in counting to identify relationship between whole numbers?
asked by tammy 
poetry
Does the books: "The Scarlet Letter", "The minister’s Black Veil", and "Young Goodman Brown" correspond to the PreCivil/American culture??....if it even does, if not explain PLEASE!!!
asked by Attalah Higgs 
Brian
A stock has an expected return of 15 percent, its beta is 0.4, and the riskfree rate is 6.75 percent. The expected return on the market must be ?percent. This sample give the ERM as 0.2738 but dosent give the formula. What would the formula be?
asked by Finance 
college
HIO3 + FeI2 + HCl > FeCl3 + ICl (in acidic solution) Show and label the two balanced halfreactions (oxidation and reduction). Add H2Os, H+s or OHs as needed.
asked by jillian 
algebra
36z^2 49
asked by jim 
Science
I have to make a book about Potassium. What are some cool wasy a can make a book from scratch?
asked by Devon 
government
Make a list of 5 to 7 social problems that you believe are the most critical for the United States to address. Write one to two sentences describing the extent of each social problem.
asked by Anonymous 
chem help
im doing a graph for chem lab with excel. my classmate created a graph with these coordinates: X: 3.50 X10^3 3.14X10^3 3.28X10^3 Y: 11.7 8.96 9.75 They got R2=0.998 but i got y = 3074.9x R² = 0.6291 why is it wrong. im desperate please help! screen
asked by ben 
Algebra 2
Find rarition constant and an equation of variation where y varies directly as x and y =60 when x = 10.
asked by Anonymous A 
Writing
Can you please check my citation? I'm trying to find out if it's correct. "How Deforestation Affects Us." Edu.udym. 11 Aug. 2008.web. 23 Oct. 2010. (I'd put the url if jishka would let me)
asked by Elizabeth 
math
choose a benchmark of 10,50, 100, or 1,000 to estimate the number of peanuts in a large bag.
asked by tony 
Math
Solve this In/Out table using an equation. In= 5,6, 8, 10, 12 Out= 61, 75, 100, 125, 150
asked by Andie 
statistics/probability
how many green elements are required to make a legitimate probability distribution if there is a total of 50 elements in this sample? x red blue orange brown green p(x) 0.10 0.10 0.10 0.20 ? * i am not sure but i don't think that any green elements are
asked by mary please check calculations. 
math
If Betty puts two heavy cookies on one side than how much will it be? there was a graph it said the biggist # is 3/4oz and the smallest # is 2/4. 3/4+2/4=5/4 Answer :I think it is 5/4
asked by anomous 
social studies
Which of the following is the best example of a cultural norm? The average height of adults How much respect is given to older people The average yearround temperature The age of the civilization
asked by dina 
science
I have to draw Atomic Model Drawings of the Reaction to H2CO3 and then show a balance check. How do I do that?
asked by Anonymous 
Business
We offer all types of loan worldwide at 6.8%, Our loans are well insured for maximum security is our priority.
asked by Mohammed 
U.S. Government
1st Amendment help. How can one argue persuasively that the status quo of Defamation (i.e., New York V. Sullivan) should be changed. Any help or direction one could give, would be appreciated.
asked by Nancy 
English
1. Here is fresh salad. 2. Here is a fresh salad. (Which one is correct? Are both correct?) 3. Here is cold strawberry juice. 4. Here is a cold strawberry juice. (Which one is right?)
asked by rfvv 
Math
Find a number whose square root is 24 more than 5 times the number. How do I set up this problem? Thank you for any help!
asked by Dylan 
social studies
Finding out what your boss expects of you relates to the theory of: leadership. goal setting. human relations. defense mechanisms.
asked by dina 
language
explain what metaphor means 1. At the end of the day, the sun is a freshly ripened orange.
asked by asia 
science
what type of liquid will cause apenny, paperclip,and a sewing needle to rust the fastestes
asked by hannia