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In commercial real estate financing, it is common to assume each month has 30 days and each year has 360 days (not surprisingly, this method is called 30/360).  Suppose you are offering a commercial real estate loan to a customer with an APR of 9.00% with DAILY compounding of interest and the 30/360 method.  The loan that requires no money down and MONTHLY payments of $4,000 for five years starting one month from today.  What is the correct interest rate r to use in the annuity formula? [Answers are expressed in decimal form, so if you believe correct answer is 20%, answer below would be 0.200000000] 

The following information is used for the next two questions: Suppose you graduate from college today at age 23 (time t=0) and want to retire at age 60 (time t=37).  You expected earn an effective annual rate of 10% on your retirement savings.  You will make equal, end-of-the-year deposits to your account, with the goal to have $3,000,000 in your retirement account when you retire. ———— Your wise parents suggest that you start retirement saving right away, with your first deposit at age 24 (t=1) and continue until your last deposit at age 60 (t=37).  If you listen to them, how much will you need to save each year to reach your goal?

Use the equation and table below to answer the following questions.                2 NO (g) + O2(g) –> 2 NO2(g) [NO] (M) [O2] (M) Initial Rate (M/s) 0.0125 0..0253 0.0281 0..0250 0..0253 0.1120 0..0125 0..0506 0.0561 a) Calculate the rate constant with the proper units. (2 points)b) What is the rate law for this reaction? (2 points) c) What is the overall order of the reaction? (2 points) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

Use the equation and table below to answer the following questions.                2 NO (g) + O2(g) –> 2 NO2(g) [NO] (M) [O2] (M) Initial Rate (M/s) 0.0125 0..0253 0.0281 0..0250 0..0253 0.1120 0..0125 0..0506 0.0561 a) Calculate the rate constant with the proper units. (2 points)b) What is the rate law for this reaction? (2 points) c) What is the overall order of the reaction? (2 points) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

The following information is used for the next two questions: Suppose you graduate from college today at age 23 (time t=0) and want to retire at age 60 (time t=37).  You expected earn an effective annual rate of 10% on your retirement savings.  You will make equal, end-of-the-year deposits to your account, with the goal to have $3,000,000 in your retirement account when you retire. ———— Instead of listening to your parents’ advice, you spend more money and save nothing for retirement for the first seven years out of college. After turning 30, reality hits and you decide you need to start saving towards your retirement goal.  You make your first deposit at the end of that year when you turn 31 (t=8)and continue making annual deposits until your last deposit at age 60 (t=37). Relative to the amount you needed to save per year if you started shaving right out of college (i.e., relative to your answer to the previous answer), about how much larger do your deposits now have to be given the 7-year delay?

For a first order reaction with half-life of 126 seconds, a) Calculate the rate constant for the reaction. (2 points)b) How much time would the reaction take for 12.5% to be left remaining? (1 points) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

For a first order reaction with half-life of 126 seconds, a) Calculate the rate constant for the reaction. (2 points)b) How much time would the reaction take for 12.5% to be left remaining? (1 points) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

Consider the reaction at equilibrium:         I2(g) + Cl2(g) ⇌ 2 ICl(g)         Kc = 0.11 Calculate the equilibrium concentration (in M) of ICl when 0.45 mol I2 and 0.45 mol Cl2 are initially mixed in a 2.0L flask. (5 pts.) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

Consider the reaction at equilibrium:         Fe3+(aq) + SCN-(aq) ⇌  FeSCN2+(aq)          A sollution is made containing an initial [Fe3+] of 1.11 ×10-4 M and an initial [SCN-] of 1.00 ×10-4 M. At equilibrium [FeSCN2+] = 1.70 ×10-4 M. Calculate the value of the equilibrium  constant (Kc) for the above reaction. (5 pts.) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.

Write an equilibrium expression (Kc or Kp) for each chemical reaction. (4 pts.) a) (Kc) 2H2O(l) ⇌H3O+(aq) + OH-(aq) b) (Kp) 2Ag2O(s) + H2(g) ⇌ 4Ag(s) + 2H2O(g) c)  (Kc) HCO3-(aq) + H+(aq) ⇌ H2O(l) + CO2(g)         d)  (Kp) C(s) +CO2(g) ⇌2 CO(g) **This question copyright of Dr. Simon Tang @ Valencia College. No permission for redistribution of this question.