Questions Asked on
February 23, 2013

chemistry
Consider the following reaction: Na2CO3 + NiCl2 ¨ NiCO3 + 2NaCl Using the solubility rules determine the solubility of all reactants and products. Explain your answer Please. Which product is the precipitate in this reaction? Write the complete ionic
asked by Eagertolearn 
Math
A forest ranger in a 140foot observation tower sees a fire moving in a direct path toward the windmill by the lake. The angle of depression to the fire is 3°, and the angle of depression to the windmill is 8°. To the nearest foot, how close is the fire
asked by Snake 
Chemistry
Consider this equilibrium process at 686°C. CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M. (a) Calculate Kc for the reaction at 686°C. (b) If
asked by Jackie 
Chemistry
This question has been bugging me for a long time. A rock contains a Pb206 to U238 mass ratio of .145 to 1.00. Assuming that it did not contain any Pb206 at the beginning of its formation, determine its age. I assume from the other problems in my book
asked by Nancy 
Physics
A spring stretches 0.150 m when a 0.30 kg mass is hung from it. The spring is then stretched an additional 0.100 m from this equilibrium point and released. Determine a). the spring constant, k, b). the maximum velocity of the mass, c. ) the maximum
asked by Lori 
chemistry
2.8% hydrogen, 9.8% nitrogen,20.5% nickel, 44.5% oxygen, and 22.4% sulfur determine empirical formula for compounds
asked by tula 
Chemistry
What is(are) the precipitate(s) that form when K2SO4, BaCl2, and AgNO3 solutions are mixed?
asked by Jacob 
Physics
A standard biological microscope is required to have amagnification of 200. 1)When paired with a 10 eyepiece, what power objective isneeded to get this magnification? Assume that the length of thetube of a standard biological microscope is 15 . 2) What is
asked by Cassie 
chemistry
I have a problem like this: CHCl3 + Cl2 = CCl4 +HCL This is the rate table: CHCL3 Cl2 Initial Rate .010 .010 .0035 .020 .010 .0069 .020 .020 .0098 .040 .040 .027 They want me to find the rate constant and the rate law.
asked by Nancy 
math
find the area of the shaded region in the figure assuming the quadrilateral inside the circle is a square. x^2+y^2=36 (the picture is of a square inside a circle on a coordinate plane)
asked by matt 
Science
A race car, moves at a constant speed around an oval track. Is the car accelerating? Why or why not?
asked by Mia 
Geometry
Mike and Lani stand 21.2 meters apart. From Mike’s position, the angle of elevation to the top of the Eiffel Tower is 40°. From Lani’s position, the angle of elevation to the top of the Eiffel Tower is 38.5°. How many meters high is the Eiffel Tower?
asked by Charlie 
College Physics PLEASE HELP
A spring stretches 0.150 m when a 0.30 kg mass is hung from it. The spring is then stretched an additional 0.100 m from this equilibrium point and released. Determine a). the spring constant, k, b). the maximum velocity of the mass, c. ) the maximum
asked by Lori 
The Bet by Anoton Chekhov
The "end" of the story begins after the jurist leaves his confinement in "The Bet" by Anton Chekhov...true or false?
asked by rabbit445 
Math Help Please!!!!
The breaking strengths (say, y) for one foot square samples of a particular synthetic fabric are approximately normally distributed with a mean of 2280 pounds per square inch and a standard deviation of 10.6 psi. a) find the probability of selecting a 1
asked by Taylor 
Chemistry
Consider the heterogeneous equilibrium process shown below. C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is found to be 3.87 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
asked by Alan 
chemistry
Calculate the change in entropy (ΔS˚) of reaction (J/K) for the equation as written. BaCO3(s) → BaO(s) + CO2(g) Table: S° (J/(K mol)) BaCO3(s) = 112 BaO(s) = 70.3 CO2(g) = 213.7 So the answer is 41.7 I thought to find the entropy of reaction you
asked by Carter 
grade 11 math
Determine two angles between 0°and 360°that have a secant of 4. Round your answers to the nearest degree. There are tw answer 104°( I got this one but there is also 256° I don't have anyidea for this one please explain to me I appreciate your time
asked by Priya 
Economics
A $90,000 investment is made. Over a 5 year period, a return of $30,000 occurs at the end of the first year. Each successive year yields a return that is $3,000 less than the previous year's return. If money is worth 5 percent, use a gradient series factor
asked by katie 
chem
Body temperature is about 308K. On a cold day, what volume of air at 273K must a person with a lung capacity of 2.00 L breathe in to fill the lungs?
asked by jillian 
Math Analysis
what are the two critical points for r=4cos( 4(theta)) and its symmetries. As well as for r=2+2sin(theta)?
asked by cindy 
physics homework
You throw a 20 N rock into the air from ground level and observe that when it is 1 5.0 M high, it is traveling upward at 25.0 m/s. Use the work energy principle to find (a) the rock’s speed just as it left the ground and (b) the maximum height the rock
asked by samantha 
Physics
An animalrescue plane flying due east at 33.0 m/s drops a bale of hay from an altitude of 58.0 m. If the bale of hay weighs 173 N, what is the momentum of the bale the moment it strikes the ground?
asked by Anonymous 
Physics
A femur is a bone in the leg whose minimum cross sectional area is about 4.0 x 10^4 m^2. A compressional force in excess of 6.8 x 10^4 N will fracture this bone. A.) Find the maximum stress that this bone can withstand and B.) What is the strain that
asked by Lori 
Physics (Velocity in two dimensions)
Please explain, A clown in a circus is about to be shot out of a cannon with a muzzle velocity of 15.2 m/s, aimed at 52.7° above the horizontal. How far away should his fellow clowns position a net to ensure that he lands unscathed? The net is at the same
asked by Kathy 
Math
Suppose
asked by Snake 
chemistry
8.09% carbon, 0.34% hydrogen, 10.78% oxygen, and 80.78% bromine its similar to the last one i posted empirical formulas
asked by tula 
Math Helpppp
The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can
asked by Katy 
chemistry
sometimes,instead of percentage composition, you will have the composition of a mass sample. using the actual mass of the sample, determine the empirical formula for compounds that have the following analyses. b. a 13.07g sample of an unknown substance is
asked by tula 
Chemistry
calculate the pH and the propionate ion concentration [c3h502] of a solution that is .06M in potassium propionate [kc3h502] and .085M in propionic acid [hc3h502]
asked by Michael 
Science
a sample of an unknown metal has a mass of 21.6g and a volume of 8.00cm^3 . calculate the density of the unknown metal
asked by Stefan 
math
a car weighing 15000N rounds a curve of 60m. radius banked at angle of 30 degrees.find the frictional force acting on the tires when the car is travelling at 100kph.The coefficient of friction between the tires and the road is 0.90.
asked by randy 
chm
Why are the atomic masses listed in the periodic table not whole numbers? Answer Scientists have yet to make the precise measurements. That would be too much of a coincidence. ??>>The atomic masses are average atomic masses. or >>Today's instruments are
asked by jj 
physics homework
two tugboats pulled a disabled supertanker. each tug exerts a constant force of 1.80 x 10 degree N, one 14 degree west of north and the other 14 degree east of north, as they pull the tanker 0.75 km toward the north. what is the total work they do on the
asked by samantha 
statistics
Accuracy of price scanners at WalMart. The National Institute for Standards and Technology (NIST) mandates that for every 100 items scanned through the electronic checkout scanner at a retail store, no more than 2 should have an inaccurate price. A recent
asked by Sandy 
Elementary Analysis
A company wants to manufacture cylindrical aluminum cans with a value of 1000cm^3 (1 Liter) What radius and height of the can be to minimize the amount of aluminum used? Please help! This is very hard. Thanks.
asked by JEZRELL 
american government
which of the following ideas was not promoted by the social contract theory
asked by keona 
Calculus and Vectors
Show that proj(b⃗a⃗) =[(a⃗⋅b⃗)/(b⃗⋅b⃗)](b⃗)
asked by Ginny 
Thermodynamics
A cylinder contains one liter of air at room temperature (300 K) and atmospheric pressure (10^5 N/m^2). At one end of the cylinder is a massless piston, whose surface area is 0.01 m^2. Suppose that you push the piston in very suddenly, exerting a force of
asked by Jane 
Chemistry
Ammonia is composed of hydrogen and nitrogen in a ratio of 9.33 g of nitrogen to 2.00 g of hydrogen. If 2.19 g of nitrogen combined completely with hydrogen to form ammonia, what mass (g) of ammonia would be formed?
asked by alex 
Science
What did Oprah Winfrey do for 152 exceptional girls in South Africa? Select one: a. She gave each of them college scholarships. b. She helped them attend school in the United States. c. She invited them to attend her new school. d. She convinced them to
asked by paragonnova 
Math
The number of gallons of water remaining in a swimming pool t minutes after the drains are opened and the pool begins emptying is give given by the function f(x)=40t^23000t+40,000 gallons. Between 3 and 5 minutes after the drains were opened, the pool
asked by Chase 
Geometry
An isosceles trapezoid has bases of length 20 and 12 centimeters and legs of length 11 centimeters what is the area of the trapezoid to the nearest tenth
asked by Julieta 
Physics
A lens with a focal length of 25 cm is placed 45 cm in front of a lens with a focal length of 5.0 cm. a) How far from the second lens is the final image of an object infinitely far from the first lens? b) Is the image in part a in front of or behind the
asked by Cassie 
research methods
determining variables and identifying this type of quasiexp design for this study is confusing: Study: lower socioeconomic status student benefit more over time from an academic tutoring program than higher socioeconomic students. Now: looks like this is
asked by donna 
math
find the present value using the present value formula. Achieve $ 225,500 at 8.65% compounded continusly for 8 years 155 days
asked by Andrew 
AP Chem
Need help with this practice problem. I got the values for the gas to liquid and liquid to solid. Don't know how to do the rest? Heat of Vap and fusion too? No idea! What is the enthalpy change during the process in which 100.0 g of water at 50.0 C is
asked by Chemkid 
AP Chem
Need help with this practice problem. I got the values for the gas to liquid and liquid to solid. Don't know how to do the rest? Heat of Vap and fusion too? No idea! What is the enthalpy change during the process in which 100.0 g of water at 50.0 C is
asked by Chemkid 
biology
27. Pretend you are a carbon atom that was part of a molecule of CO2 dissolved in the water at the beginning of the experiment. Describe a path you could take through both organisms in this experiment, including the molecules you would be a part of and the
asked by roger 
maths
ABCD is a parallelogram. AB=9cm,BC=5cm and DE is perpendicular to AB.If the area of parallelogram is 36sqcm,find AE?
asked by Anonymous 
Trig identities:(
Sin4A  cos4A = sin2A  cos2A Can i just square root the left side??:O
asked by Kristien 
chm
How would you classify the following material?swimming pool water homogeneous mixture
asked by JJ 
physics
The resistances of a platinum resistance thermometer at the ice point, the steam point and the boiling point of sulphur are 2.50,3.50,and 6.50 respectively. find the boling point of sulphur on the platinum scale. the ice point and the steam point measure 0
asked by shashi ranjan 
Physics
3 equal charges (all +Q) are located at A, B and C. ABC is an equilateral triangle with sides d. Point A is located at (0,0), point B at (d,0), point C at (d/2,d3√/2). Point P is inside the triangle such that AP=BP=CP. What is the electric field at P 
asked by P 
Math
Two paths diverge at a 48 degree angle. Two mountain bike riders take separate routes at 8km/hr and 12km/hr. How far apart are they after 2 hours? Include a diagram.
asked by Anonymous 
Chemistry
When 4.54 g of a nonelectrolyte solute is dissolved in 565 mL of water at 29 °C, the resulting solution exerts an osmotic pressure of 835 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the
asked by Jim 
College Physics PLEASE HELP
A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is
asked by Lori 
chem
how many moole of helium gas is needed to pressurize an evacuated 25.0L tank to a pressure of 120 atm at 25.0 C ?
asked by Stephanie 
Math
Two paths diverge at a 48 degree angle. Two mountain bike riders take separate routes at 8km/hr and 12km/hr. How far apart are they after 2 hours? Include a diagram.
asked by Anonymous 
chemistry
what pressure would have to be applied to a 27.2 ml sample of gas at 25 Celcius and 1.00atm to compress its volume to 1.ooml without a change in temperature
asked by Gerry 
calculus
At noon, you and I start at the same place, and then you head east at a speed of 5 kilometers per hour, and I head north at a speed of 4 kilometers per hour. After two hours, how fast are we moving apart, in kilometers per hour?
asked by lisa 
Physics
3 equal charges (all +Q) are located at A, B and C. ABC is an equilateral triangle with sides d. Point A is located at (0,0), point B at (d,0), point C at (d/2,d3√/2). Point P is inside the triangle such that AP=BP=CP. What is the electric field at P 
asked by P 
Precalc
Convert the complex number c=3cis 0.25 into rectangular form.
asked by Jane 
Chemistry
Na2CO3 + NiCl2 ¨ NiCO3 + 2NaCl Using the solubility rules determine the solubility of all reactants and products. Explain your answer. I answered Na2 as soluble, Co3 as soluble, NiCl2 as soluble >NiCO3 as insoluble, and 2NaCl as soluble. My
asked by Eagertolearn 
language arts
what similar character traits do the three samurai share? on the story the oxcart
asked by viviana 
Thermodynamics
The initial state consists of a closed system containing one mole of superheated liquid water at 115°C and 1 atmosphere pressure. The immediate surroundings are also at 115°C and 1 atmosphere pressure. The change in state is described as this one mole
asked by Becca 
Physics
The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 1.8 x 1011 F and a variable inductance. If the antenna is intended to
asked by Please HELP 
Physics
A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is
asked by Lori 
science
what are three opposites or nonexamples of fossil records?
asked by kate 
algebra
FIND THE VALUE OF K, SO THAT THE EXPRESSION IS A PERFECT SQUARE TRINOMIAL. x^2+6x+k k=
asked by student needs immediate help 
Chemistry
At the start of the reaction there are 0.714 mole of H2, 0.984 mole of I2, and 0.886 mole of HI in a 2.70 L reaction chamber. Calculate the concentrations of the gases at equilibrium.
asked by Amy 
science
The atmospheres of Mars and Venus are mostly carbon dioxide. Earth’s atmosphere contains only a fraction of a percent of carbon dioxide. Why is Earth’s atmosphere so different from those of Mars and Venus?
asked by ricardo 
college algebra
now i understand both intersection and union but not with an infinity. how do i figure this out (infinity,4)n(0,infinity)
asked by Marie 
Chemistry
Suppose u place a beaker containing a solution in a refrigerator , an hr later a white solid is found on thr bottom of thr beaker. What happened. Why? I think a precipitate formed, but can any1 explain briefly so i can understand better? Thanks
asked by Mia 
Finite Math
6. A computer company has two manufacturing plants, one in Rochester and one in Queens. Transporting a computer from Rochester to the retail outlet takes 15 hours and costs $15, while transporting a computer from Queens to the retail outlet takes 20 hours
asked by Amy 
math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,500 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the
asked by Katarzyna 
Earth Science
Which organism evolved before the others in geologic time? mammals amphibians reptiles **fish Which type of organism evolved later than the others? **mammals amphibians reptiles fish
asked by Bob 
math
How much money would have to be deposited into a compound interest savings account earning 5% each year in order to accumulate $10,000 in 18 years?
asked by Don 
math
simplifying expressions
asked by jean 
Math
In a computer lab there are two di erent printers. From 1pm2pm Printer1 receives on average 12 print jobs and Printer2 receives on average 5 print jobs. Assume the number of print jobs requested on Printer1 and on Printer2 are independent of each other.
asked by Nathan 
Math
The number of gallons of water remaining in a swimming pool t minutes after the drains are opened and the pool begins emptying is give given by the function f(x)=40t^23000t+40,000gallons. Exactly 2 minutes after the drains are opened, the pool was
asked by Chase 
ENGLISH
need help with nominative and objective CASE PRONOUNS. these are the ones confusing me... THE POSTAL WORKER DELIVERED A PACKAGE FOR HARRY AND SHE/HER. MY GRANDFATHER AND HER/SHE OPERATED A SMALL INN IN VERMONT. THE COACH PRAISED MANUEL AND HE/HIM. WE'VE
asked by EMILY 
Math
A bag contains two blue, three purple, four yellow, two red, three green and one orange marbles. What is the conditional probability that, without replacement, the second marble is purple given that the first marble was green?
asked by Becky 
Calculus
g(t) = 1/(t^5 + 1)^2 g'(t)
asked by Naomi 
Geometry
An isosceles trapezoid has bases of length 20 and 12 centimeters and legs of length 11 centimeters what is the area of the trapezoid to the nearest tenth
asked by Julieta 
Calculus
Find an equation of the tangent line to the curve at the given point y^2 = x^3 (2x) (1,1)
asked by Jeremy 
Math
An electron accelerates from rest to the right, in a horizontally directed electric field. The electron then leaves the electric field at a speed of 4.0 × 106, entering a magnetic field of magnitude 0.20 T (Tesla) directed into the screen. Calculate the
asked by Ginny 
College Algebra
Hello, I have been trying to do my math homework for a few hours now and can not figure out how to find the indicated intersection or union in interval notation. Example: (1,5)n[0,8) Please help me!!
asked by Marie 
Stat Help Please
Determine which sampling method was used in each scenario. on a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened. Airport security uses a random number generator to determine the next passenger to
asked by Melissa 
medical terminology
Using either or both chapters (6 and/or 7) create a SOAP note using five medical words discussed in this week’s reading.
asked by Myrtho 
Precalc
Write the complex number z = −6 in polar form
asked by Jane 
Math
CosA/1+sinA=1sinA/cosA I have to prove the identity each side has to b the same how would i do that? I have a unit test on monday so im doing practice questions
asked by Kristien 
United States Constition
Details: Part I: Principles of the Constitution Create a chart or a matrix outlining the following primary principles of the Constitution: 1. SelfGovernment 2. Separation of Powers 3. Checks and Balances Write an analysis of 250500 words on the
asked by Sylvia 
maths
find the radius of the circle if length of arc is 4p cm and angle made by the arc at the centre is 40 deg.find the area made by the arc.
asked by urvashi 
Stat Help Please
Determine which sampling method was used in each scenario. on a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened. Airport security uses a random number generator to determine the next passenger to
asked by Melissa 
mathsurgently needed
A person buys a refrigerator for rupees 12000. He pays rupees 6000 in cash and agrees to pay the balance in 12 annual instalments of rupees 500 each. If the rate of interest is 12% and he pays it with instalments on the unpaid amount, how much did the
asked by Anonymous 
Engineering Econonmy
You decide to open an IRSapproved retirement account at your local brokerage firm. Your best estimate is that it will earn 9 percent. At the end of each year for the next 25 years, you will deposit $4000 per year into the account (25 total deposits). 3
asked by manny 
Math
Solve the equation by first factoring the quadratic expression. 1. x2+4.5x=0 2. x29x=0 3. x2+10x=0
asked by Enrique 
Math
Solve the equation by first factoring the quadratic expression. 1. x2+4.5x=0 2. x29x=0 3. x2+10x=0
asked by Enrique 
geometry
ABCD is a square of side length 1. E , F , G and H are the midpoints of AB , BC , CD and DA , respectively. The lines FA , AG , GB , BH , HC , CE , ED and DF determine a convex 8gon. By symmetry, this octagon has equal sides. If s is the side length of
asked by Anonymous 
Physics
A battery has an internal resistance of 0.017 Ù and an emf of 9.00 V. What is the maximum current that can be drawn from the battery without the terminal voltage dropping below 8.75 V?
asked by Don 
science
name three examples of a fossil record
asked by Dingbat 
grade 11 math
Determine two angles between 0°and 360°that have a secant of 4. Round your answers to the nearest degree. There are tw answer 104°( I got this one but there is also 256° I don't have anyidea for this one please explain to me I appreciate your time
asked by Priya 
Science
What units of measurement do you use to measure the earth to... 1. Moon 2. Galaxy 3. Sun 4. Communication satellite 5. Pluto 6. Proxima Centauri
asked by Abbey 
Math
abcd is a parallelogram with sides ab=12 cm,bc=10 cm and diagonal ac=16 cm .find the area of the parallelogram also find the distance between its shortest sides
asked by Shubham 
chemistry
One reaction that produces hydrogen gas can be represented by the unbalanced chemical equation Mg(s) + HCl(aq) −! MgCl2(aq) + H2(g) . What mass of HCl is consumed by the reac tion of 2.96 mol of magnesium? Answer in units of g
asked by Anonymous 
us history
plz someone give me the answer ive read m book over and over i cant find the answer to why is new orleans important
asked by andrew 
Math
the pet shop owner told jean to fill her new tank 3/4 full with water. Jean filled it 9/12 full. what fraction of the tank does Jean still need to fill?
asked by Lissette 
Chemistry
A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. What mass of precipitate forms in this reaction?
asked by Eagertolearn 
chem
Mg(s) + 2HCl(aq) −> MgCl2(aq) + H2(g) What mass of MgCl2 is produced? Answer in units of g second part What mass of H2 is produced? Answer in units of g
asked by Anonymous 
MATH
If the sales tax on an item is 7%, the sales tax on an item costing d dollars can be found by the expression .07d. Determine the sales tax on a compact disk that cost $15.99.
asked by TASHA 
Maths
L=2x1 W=x+3 Area =294cm find length and with of rectangle
asked by Kay 
Calculus
F(x) = 2√(1 + tanx) f'(x) 2√ = x^(1/2)
asked by Kelly 
Science
Would the function of the lung be affected if the alveoli were surround by walls made of several layers of cells rather than a single layer of cells? How?
asked by Tu Anh 
World History
Consider the meaning of bloodletting and human sacrifice to the Mesoamericans How do these practices make sense in the context of their belief systems?
asked by Gregory 
biology
Can a snail survive in an aquarium with no living plants in it? What do fish owners do to compensate if their aquarium has no plants?
asked by roger 
statistics
approximately 300 millions golf balls were lost in the united states in 2009 assume the number of gold balls lost in an 18 hole is distributed as a poisson random variable with a mean of 5 balls
asked by Anonymous 
Chemistry
At the start of the reaction there are 0.714 mole of H2, 0.984 mole of I2, and 0.886 mole of HI in a 2.70 L reaction chamber. Calculate the concentrations of the gases at equilibrium. The equilibrium constant is 54.3.
asked by Amy 
econ
Consider the market for trucks. Assume that the demand for trucks is given by 60 2 5 D Q P Y where P is price per truck and Y is the income of the buyers. The supply of trucks is given by 30 5 3 S Q P W where W is the price of all the materials needed to
asked by des 
precalculus
theta=sin^1 (5/13) ; (x,y)=(3,1) how do u find the coordinates of x' and y'??
asked by kikii 
science
Using either or both chapters (6 and/or 7) create a SOAP note using five medical words discussed in this week’s reading. urinary and male reproductive system
asked by meemee 
Chemistry
1. A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. Which reactant is the limiting reactant? 2. A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. How many moles of precipitate form in
asked by Eagertolearn 
Chemistry
pH Strip b = 10. Strip D = 3 what would happen if you mixed togather equal amounts of the solutions that produced the results of strip b and strip d?
asked by Mia 
Plz urgent
Can anyone please answer my chemistry question i posted quick?
asked by Mia 
business math
The video discusses the logistics involved some of fedex service offering. Fedex ship FOB destination because the seller pays the freight. If there is damage to a domestic freight shipment, fedex will provide up to $50 per pound insurance on new items or
asked by Akia 
math
Solve each system of equations by graphing. Check each solution. The perimeter of a rectangle is 24 ft. Its length is five times its width. Let x be the length and y be the width. What is the area of the rectangle?
asked by Anonymous 
Math
Write the following complex number in polar form: z = 4 − 4i
asked by Alice 
Chemistry.
pH C ( dark green) pH : 8 d ( purple) pH : 3 Suppose u mix togather equal amounts of the solutions that produced the results of strip C and strip D , then test the pH of this new solution. What colo will the indicator paper be ? Explain.
asked by Mia 
Chem
Hey in class we learned that pi molecular orbitals come from overlapping p atomic orbitals...this occurs in a conjugated system or aromatic rings ( contains sp2 carbons with one remaining p orbital which can can overlap to form double bonds)...my question
asked by Leena 
physics
A 50kg rocket is fired vertically upwards and experiences a 300N air friction force.What upthrust must the rocke motor produce in order to accelerate the rocket upwards at 6m per second
asked by Anonymous 
Microeconomics
If fixed cost is $8,000, variable cost is $5,000 at an output of 2 and $9,000 at an output of 3, how much is marginal cost at an output of 3? Can someone show me how to do the formula step by step?
asked by Lisa 
College Algebra
need help finding the distance using the distance formula please!!! (0,0) (x,y)
asked by Marie 
Chemisry
What is the % M/M concentration of 5.00 mL of methanol in 25 g solution of methanol in water? The density of methanol is 0.791 g/mL. The density of water is 1.000 g/mL. The density of the solution is 0.995 g/mL. Please show work, thank you!
asked by Rena 
Math
Find the equation of the secant line to the graph of y= 2x^33x^2+4x1 from x=1 to x=3. Give your answer in slopeintercept form.
asked by Sam 
chemistry
convert 725mm Hg into equivalent kPa
asked by Gerry 
chemistry
Calculate the wavelength of a proton with energy 2.45eV. in meter plz
asked by schoolgirl 
chemistry
what mass of Fe3O4 would conatin 1.85*10^21 atoms of Fe?
asked by rose 
resume
I am not a english speaker!!!!!!!! i am writing a resume is this statement correct: I am introducing my work: Student focus teaching professional with instructional experience and multicultural knowledge. Currently one of three teachers at Grovetown High
asked by rita 
chem!!!!!!
empirical formulas" p 889(153e)
asked by rose 
pre calc
theta=sin^1 (5/13) ; (x,y)=(3,1) how do u find the coordinates of x' and y'??
asked by missie 
World History
Why did the Persians who seemed more powerful lose to Alexander?
asked by Gregory 
World History
What were Alexander's lasting contributions to society?
asked by Gregory 
Chemistry
A compound which can donate 2 protons is termed dibasic acid. What is the name given to a compound which can accept 2 protons?
asked by John 
algebra
electricity costs 7.57 a month plus 8.77 per kilo watt hour for the first 400 kWhr and 6.574 per kWhr for all useage over 400 in a month. what is the cost for 300 kWhr? 2638 What is the cost of 700? 7.57+8.77 times 400 and 6.574 times 300? 5487.77 I think.
asked by Lori 
Math
Imagine a country has a population of 210 million. Within the country there are 95 million people who are employed workers, 50 million people incapable of working, and 60 million people capable of working, but not actively looking. Based on this
asked by Hope 
social studies
Which of the following related subjects is listed as a broader term?
asked by Neslihan 
Spanish
ombina las palabras lógicamente. 1. la langosta 2. la salchicha 3. el ají 4. el caldo 5. el sacacorchos 6. hornear 7. los ingredientes 8. la sal 9. el durazno 10. el aderezo a. el vino b. la toronja c. la sopa d. la receta e. la pimienta f. la ensalada
asked by Sarah 
calculus
F(x)= log_3 (15x) F'(x)=
asked by Britt 
math
Given two numbers whose sum is 56. Six times the larger is 72 more than 5 times the smaller. Find the numbers. Please help me solve this problem in a simple explanation so I can understand it.
asked by Traci 
science
How does the temperature change in the sun's atmosphere differ from the temperature change in the sun's interior?
asked by Stephanie 
English
If the sentence was: Ramai was so nervous that she had already dropped and ____ two dishes. What way would I write BREAK to make it fit into this sentence?
asked by Kylie 
math 83
3(2/3+3/4)+5(3/4+2/5
asked by rick twigg 
edu
Ms Sanchez is selecting a picture book to share with her two year olds. She will try to select a book with: a.few pictures so the story is lessened d. detail messages c.simple drawings d.fantasy type illustrations I think d not sure
asked by ray 
Math
Prove identity Cot⭕sin⭕sec⭕= 1 How would i do this one please help me. Thankyou
asked by Kristien 
calculus
Find dy/dx by implicit differentiation. x^4 + x^3y + 4y^2 = 7 x cos y + y cos x = 1
asked by Cole 
calculus 2
integrate e^(2x) / (e^(4x) + 9) am I allowed to simplify the e^(2x) with the e^(4x)? Thank you
asked by Tom 
math
kylie answered my question but did not go into detail how to solve the problem. Here's the problem I need help with. Given two numbers whose sum is 56. Six times the larger is 72 more than 5 times the smaller. Find the numbers. I need to know step by step
asked by Traci 
physics
How fast is a city on the earth's equator (such as Singapore) moving due to our planet's daily spin on its axis?
asked by Dani 
Calculus
F(x) = (x^3  x + 1)^4 f'(x)=
asked by Nelly 
I need help
1. What is the organization in the first paragraph of "The Next Big Thing"? (1 point) chronological order compare and contrast problem and solution order of importance 2. Which of the following could not be considered the theme of "Big Yellow Taxi"? (1
asked by Anonymous 
Geography
Hydrosphere basic facts and what makes up the hydrosphere?
asked by Robin 
College Math
Could someone please explain the union to me. I don't understand. I get the intersection ones but not union. HElp me? Ecample: (1,1)U[0,6]
asked by Marie 
science
Create a SOAP note using five medical words from the urinary or male reproductive system
asked by micahel 
chemistry
(b) Calculate the amount of zirconium produced (in kg) if a reactor were charged with 310.0 kg and 29.0 kg Na.
asked by Anonymous 
Finance
You plan to open a retirement account. Your employer will match 50 percent of your deposits up to a limit on the match of $2500 per year. You believe the fund will earn 12 percent per year over the next 30 years, and you will make 30 deposits of $5000,
asked by katie 
Science
in what ways do you think earth's moon may be similar to mercury
asked by Angie 
Precalc
Write the complex number z = 2 + 5i in polar form, rounding to the nearest hundredth if needed.
asked by Jane 
Precalc
The vectors, (2, 1) and (4, 8), are 1)parallel 2)perpendicular 3)neither parallel or perpendicular
asked by Jane 
pysics
a force of 4N at 30 degree from another force 5Nwk is pointing east. find the resistance of the two forces using parallelogram
asked by stanley 
math
prove:1) nCr=nCrr 2) nCr+nCr+1=n+1Crr+1
asked by stanley 
Math Statistics
The sorting algorithm known as bogosort can be described in pseudocode as: while not isSorted(input): shuffle(input) If we feed bogosort a shuffled array of length n of unique items the distribution of the number of times bogosort checks if the array is
asked by Nathan