The initial pH of a 250.0 mL buffer that consists of 0.15 M phenylacetic acid and 0.13 M potassium phenylacetate is 4.25.  Calculate the pH of the buffer after 1.00 mL of 5.0 M NaOH is added to the buffer. (

Draw the Lewis Structure for NO3- and then choose: Questions Answer Choices The correct molecular structure of NO3- is: The polarity of NO3- is:

Calculate the partial pressure (in atm) of N2O in the vapor above a solution with an N2O concentration of 1.3 x 10-5  M.  k for NO = 2.4 x 10-2 M/atm Use the answer box to fill in the blank for your answer: ____

You want to prepare a solution of 0.300 M FeCl2 (). How many grams of FeCl2 do you need to weigh out if you are preparing your solution in a 100.0-mL volumetric flask? 

Consider the following exothermic reaction that is at equilibrium. Determine whether each of the following scenarios will shift the reaction to favor the products, the reactants, or neither. 

An aqueous solution of sucrose (MW = 342.3 g/mol) has a weight percent of 16.0% and a solution density of 1.0635 g/mL. Calculate the molarity of sucrose in the solution. For your answer, enter numbers only with 4 significant digits.

Solve the problem.You want to have a $25,000 college fund in 5 years. How much will you have to deposit now in an account with an APR of 3.3% and annual compounding?

Use the compound interest formula for compounding more than once a year to determine the accumulated balance after the stated period.$400 deposit at an APR of 3% with quarterly compounding for 3 years

Use the compound interest formula for compounding more than once a year to determine the accumulated balance after the stated period.$2000 deposit at an APR of 3% with monthly compounding for 2 years

Use the compound interest formula to determine the accumulated balance after the stated period. Assume that interest is compounded annually.$18,000 is invested at an APR of 8% for 5 years.