Blog

The reaction between chlorine gas and water is given below along with it’s equilibrium constant (K or Kc).

You want to prepare a solution of 0.500 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? 

You prepared a solution by dissolving in enough water to make 500.0 mL of solution. Calculate the molarity of that solution. Enter numbers and decimal points ONLY.  Enter three significant digits past the decimal point.  Your answer should be four significant digits total. DO NOT enter M, it is known that your answer is in M.

You dissolve 50.0 g of solute in enough water to make a solution that has a total volume of  250.0 mL and a density of 1.035 g/mL. Calculate the mass percent of the solution. Enter numbers and decimal points ONLY.  Enter one significant digit past the decimal point.  DO NOT enter %, it is known that your answer is in %.

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. 

Answer the question.You intend to create a college fund for your baby. If you can get an APR of 3.0% and want the fund to have a value of $119,906 after 16 years, how much should you deposit monthly?

You win $2900 from your favorite slot machine, and you decide to invest the amount at a 3.6% APR for 5 years at Wells Fargo.   A) If your winnings are invested in a simple interest account, how much money will be in the account after 5 years? Enter numbers only. Do not enter the “$” symbol or words. $[simpacct]   B) Instead of a simple interest account, suppose your winnings are invested at 3.6% APR in a compound interest account with monthly compounding. How much money will be in your account after 5 years? Enter numbers only. Do not enter the “$” symbol or words. Do not leave any answer blank.   Fill in the blanks below that correspond to what you would type into the TVM-Solver in your calculator: N = [N] I% = [I] PV  = [PV] PMT = [PMT] P/Y = [PY] C/Y = [CY]   * Enter the future value (FV) that will be in the account after 5 years. Enter numbers only. Do not enter the “$” symbol or words. NOTE: If you decide to use the textbook formula to compute the future value (instead of the TVM-Solver), round intermediate steps to 4 decimal places. Round the final answer to the nearest cent (or 2 decimal places).   The future value of the account after 5 years will be: $[compacct]

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

Calculate the balance under the given assumptions.Find the savings plan balance after 18 months with an APR of 4% and monthly payments of $543.

Use the compound interest formula for compounding more than once a year to determine the accumulated balance after the stated period.$6000 deposit at an APR of 3% with daily compounding for 7 years