Tuesday

February 9, 2016
Total # Posts: 149

**chemistry**

.12
*November 23, 2010*

**chemistry**

A buffer solution contains 0.200 M NH3 and 0.250 M NH4Cl. What is the pH of the buffer solution after the addition of 10.0 mL of 0.100 M NaOH to 50.0 mL of the buffer? Kb for NH3 is 1.8 x 10-5.
*October 26, 2010*

**6th grade**

what is 3/10 divided by 13/14
*October 20, 2010*

**science**

D is the correct answer. Convert to 10^15 and then add. Significant digits for addition key on the decimal point location, so 3.6018 x 10^15 is correct.
*September 12, 2010*

**9th grade Math**

what is the probabilty of spinning a divisor of 12?
*August 18, 2010*

**math**

In 2000 1/3 of all births in the US were to unmarried women. IF there were 1,352,938 births to unmarried women then how many births were in 2000?
*August 18, 2010*

**english**

Is Where to? a complete sentence or a fragment?
*June 8, 2010*

**11th grade**

Molarity= Moles of solute/Liters of solvent Conversions (Dimensional Analysis) You always start with whatever unit you're given and multiply that by whatever new unit you are looking for divided by the amount of old units to make one of the new units.
*May 27, 2010*

**Geometry**

Need help finding dimensions of a triangular prism. It has a volume of 900 cubic inches. Two of the dimensions are consecutive even numbers. Two of the dimensions are multiples of 5. All the dimensions are less than 16, but greater than 6. All lengths are different. The base ...
*May 20, 2010*

**Geometry**

We have a triangular prism that has the following characteristics. It has a volume of 360 cubic inches. The base of the triangle is twice the height of the triangle. The difference between the height of the prism and the height of the triangle is 4 inches. The height of the ...
*May 20, 2010*

**Geometry**

A rectangular prism has the following characteristics. It has a volume of 71 cubic inches. The sum of the three lengths is 14. The width is 2 less than the length. The length is 5 more than the height. What are the dimensions of this rectangular prism? Need help on finding ...
*May 20, 2010*

**Geometry**

I need to find the dimensions of this rectangular prism. It has a volume of 108 cubic inches. The length and width of the base are identical. The height is half of the length. Can you help explain how to do this given this information?
*May 20, 2010*

**us history**

Why do some people consider Andrew Jackson a tyrant?
*May 18, 2010*

**chemistry**

A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 23.0°C. What was the final temperature?
*May 10, 2010*

**chemistry**

The temperature of a sample of water increases from 20.7°C to 45.7°C as it absorbs 5675 J of heat. What is the mass of the sample?
*May 10, 2010*

**chemistry**

How much heat is evolved when 269 g of ammonia gas condenses to a liquid at its boiling point?
*May 10, 2010*

**math**

the length of a rectangle is 3cm more than twice the width. the perimeter is 84cm. find the length Please show me the steps on how you get the answer. Thanks
*April 7, 2010*

**Math**

the length of a rectangle is 3cm more than twice the width. the perimeter is 84cm. find the length
*April 7, 2010*

**science**

guys im really depressed. i need this answer too
*January 30, 2010*

**algebra**

how do i factor 8m^2-6mn-9n^2
*November 4, 2009*

**5th grade english**

How do I do this. Read the journal entry about a field trip. Cross out any extra information. The underline the text where it should be divided into two or more sentences. I liked using the heat lamp in the science activity it showed how the polar bear's black skin helps ...
*March 30, 2009*

**Economics (Equilibrium)**

Suppose fred ethel ricky and lucy have the following demand functions for a public good Qf= 40-1/2p Qe= 20-p Qr= 30-1/2p Ql= 50-p The good can be produced at a constant cost of 5 dollars Calculate the Lindahl Equilibrium I know that the lindhal is the vertical summation of ...
*March 26, 2009*

**Biology**

Increasing what in a plant cell will increase energy production? I was thinking glucose, water, or sunlight. But the thing is we are talking about changing something within the cell. Anyone want to chime in on this? Thanks!
*February 20, 2009*

**college Econ**

Suppose Fred and Ethel need to divide 20 pizza slices and 10 cans of beverage. Fred's utility function is given by the equation U=Min(Z,B), where Z is the amount of pizza and B is the amount of beverage. Ethel's utility is given by the equation U=Min(1/2Z,B). What are ...
*February 19, 2009*

**Economics**

Suppose Fred and Ethel need to divide 20 pizza slices and 10 cans of beverage. Fred's utility function is given by the equation U=Min(Z,B), where Z is the amount of pizza and B is the amount of beverage. Ethel's utility is given by the equation U=Min(1/2Z,B). What are ...
*February 18, 2009*

**Algebra**

5,250=16x+130 16x=5,250-130 16x=5,120 x=5,120/16 x=320 7,810=16x+130 16x=7,810-130 16x=7,680 x=7,680/16 x=480 This is what I came up with is this correct?
*February 18, 2009*

**Math**

Thanks! Take care! :)
*February 17, 2009*

**Math**

So basically the answer would be x>15? Does this make sense considering that 16 is greater than 15? Thanks for the help!
*February 17, 2009*

**Math**

Photography reprints cost $0.52 each at a local photo shop. Through the mail, they cost $0.44 each plus $1.20 postage and handling. How many reprints must a customer purchase to make it less expensive to use mail order?
*February 17, 2009*

**Math**

Im having trouble with filling in a table for MC TC and AC given a cost funchtion The cost functon is C(q)= 50+.5q im given q 1 through 7 Ive aready calculated TC for q=1 TC=50.5 for q=2 TC=51 and so on MC is where im having Trouble. i know MC = dC(q)/dq or change in cost over...
*February 10, 2009*

**Econ**

Im having trouble with filling in a table for MC TC and AC given a cost funchtion The cost functon is C(q)= 50+.5q im given q 1 through 7 Ive aready calculated TC for q=1 TC=50.5 for q=2 TC=51 and so on MC is where im having Trouble. i know MC = dC(q)/dq or change in cost over...
*February 10, 2009*

**ECON**

Suppose the marginal cost of pollution reduction is ½ R, where R is the amount of pollution reduced given in percentage terms. The marginal benefit of pollution reduction is 90 - R. The government plans to auction off marketable permits in order to reduce pollution to ...
*February 6, 2009*

**Econ**

Suppose the marginal cost of pollution reduction is ½ R, where R is the amount of pollution reduced given in percentage terms. The marginal benefit of pollution reduction is 90 - R. The government plans to auction off marketable permits in order to reduce pollution to ...
*February 5, 2009*

**business**

Ford, Dell, and Zales.
*February 1, 2009*

**business**

Identify the nature of three different companies operating systems.
*February 1, 2009*

**Economics**

From 1962 to 1965, federal spending on non-defense-related education and training rose from $9.6 billion to $19.5 billion, while from 2001 to 2004, it rose from $178.4 billion to $217.5 billion. Given that the Consumer Price Index ( in January) was 30.0 in 1962, 31.2 in 1965, ...
*January 29, 2009*

**ECON**

Suppose Fred has a utility function of the form U = X ½ Y ½ . Fred has an income of $100, good X costs $1.00, and good Y costs $2.00. How much of good X and how much or good Y will Fred buy? Be sure to show all your work. Ive aready drawn my graph and i know that...
*January 22, 2009*

**ECONOMICS**

Sorry, the last Question didn't post Suppose Fred has a utility function of the form U = X ½ Y ½ . Fred has an income of $100, good X costs $1.00, and good Y costs $2.00. How much of good X and how much or good Y will Fred buy? Be sure to show all your work. ...
*January 21, 2009*

**Economics**

2. Suppose Fred has a utility function of the form U = X ½ Y ½ . Fred has an income of $100, good X costs $1.00, and good Y costs $2.00. How much of good X and how much or good Y will Fred buy? Ive already drawn my graph. i know that fred could buy 100 of x only ...
*January 21, 2009*

**Art**

Compare and contrast the representation of weight and space in the painting of The Good Shepherd in the Catacomb of Saints Pietro and Marcellino and the mosaic of Justinian and Attendants in Ravenna’s Church of San Vitale.
*December 5, 2008*

**college grammar**

Iknow the right answers but I cannot explain why they are right. Please help using the indicator of what to look for. Pronoun-antecedent agreement 12a. When a driver wants to buy a new vehicle, he or she usually test drives them. COM 150 12b. When a driver wants to buy a new ...
*November 22, 2008*

**science**

What can chlorophyll be found in?
*June 8, 2008*

**MICROECONOMICS**

Hello ive been struggling with this problem for about 2 days now could someone walk me through it? Suppose a firm faces a downward sloping demand curve given by the equation Q = 100 - (1/3)P. The firm's cost function is given by the equation C = 30 + (1/4)Q^2. Find the ...
*October 16, 2007*

**Micro econ**

1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first i derive the equation to 2/3X^-1/3 1/3Y^-2/3 then im stuck i need help with the simplification
*September 18, 2007*

**Marketing**

Are u limiting your services to just dog and cat food?
*September 18, 2007*

**Economics**

Thank you soo much im a little confused with the simplification so MUx/MUy simplifies to 2y over x ? and for some reason i thought that it would have to end in a demand function of X = something
*September 18, 2007*

**Economics**

Ive been stuck on this forever now if someone could please walk me through it i was appreciate it: 1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first...
*September 18, 2007*

**spelling**

Spry
*January 16, 2007*

**chemistry**

If you know that the mass concentration of a NaCl solution is 58.5 g/L, the molar concentration (mol/L) of the solution is ? can sum1 help me plz 1 mol of NaCl has a mass of what? 58.5 g NaCl x (1 mol NaCl/molar mass NaCl) = mols NaCl on 58.5 gg NaCl. Mols NaCl/Liter of ...
*June 13, 2006*