Saturday
May 25, 2013

# Posts by Natalie

Total # Posts: 418

Chemistry
Hello, I don't really know where to begin with this question. Thanks in advance! Consider the mixing of 10.0 ml of 0.25M K2SO4 with 15.0 ml of 1.10M KCL. What is the concentration of K+, Cl- and SO4^2-? a) K+___ b) CL-___ c) SO4^2-___

english 105
Why Should one know the difference between prejudice and racism?

economics 212
B. automobile and bicycles are because if your gas goes up in price you are more likely to use your bike. The other three pairs are used together, so they are compliments.

CHemistry
Calculate the pH of a .25 M ammonium acetate (CH3COONH4) soluton. I thought u just did -log(.25) but it keeps saying that i have the wrong answer.

chemistry
What is the original molarity of an aqueous solution of ammonia (NH3) whose pH is 11.10 at 25 degrees C? (Kb for NH3=1.8 x 10^-5)

Chemistry
An aqueous solution of an unknown, monobasic weak base has an initial molarity of .176 M and a final[OH-] of .0000158 M. What is the Kb of the unknown base?

Chemistry
What is the original molarity of a solution of a weak acid whose Ka=3.5 x 10^-5 and whose pH is 5.28 at 25 degrees C?

Chemistry
Calculate the pH of an aqueous solution at 25 degress C that is .41 M in phenol (C6H5OH). Ka for phenol=1.3 x 10^-10.

home economics
What is the "current macroeconomics situation"?

Chemistry
A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282 g/L. What is the fractio...

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