PART D: Study of the Equilibrium: Fe3+(aq) + SCN–

(aq) ⇌ [FeSCN]
2+(aq)
pale yellow red
20. Which reagent(s) did you use to enhance the formation of [FeSCN]

2+(aq)? Why?

21. Indicate which ion was added to or removed from the equilibrium mixture, based on the reagent(s)
you chose in question 20.

22. Which reagent(s) did you use to enhance the formation of Fe3+(aq)? Why?

23. Indicate which ion was added to or removed from the equilibrium mixture, based on the reagent(s)
you chose in question 22.

_____ 24. Upon heating in which direction is the equilibrium shifting? (L) left (R) right
_____ 25. Upon cooling in which direction is the equilibrium shifting? (L) left (R) right
_____ 26. Is the forward reaction A. endothermic B. exothermic
27. Explain your answers to questions 24, 25, and 26.

List one use of additional capital. Explain the benefit in one paragraph.

Many changes in reporting standards have been enacted as a result of financial scandals. Identify one specific change in reporting standards or requirements and explain why this is important.  Identify the change by the title of the act or section number.  

NOTE: The Sarbanes-Oxley Act is the most frequently mentioned changed. It contains many individual provisions. Break it down to one provision that has not been mentioned by a classmate. There are a number of more recent changes to select from as well.

SECTION A: READ THE PASSAGE AND ANSWER QUESTIONS 1-3

Emma, a monthly salaried worker, received 1,300 cedis as her net salary; she heard that this year’s inflation is at 18%. This situation caused prices to soar so high that she complained about everything she buys. In the previous year she was able to buy herself, dresses, a basket of foodstuffs, a small bag of oranges, a dozen of drinks and her transportation. However, this year, she couldn’t afford the full bag of oranges but half,     and only 6 drinks after the other expenses.

1. From above, what is Emma’s nominal income?

………………………………………………………………………………………………………

2. What is her real income?

………………………………………………………………………………………………………

3. What is the difference between her real incomes for this year and last year?

............................................................................................................................................................

4. How much does Eyram need now to be able to have all the things she used to have previously?

………………………………………………………………………………………………............

5. Eyram’s salary had increased by 200 cedis this year, with the inflation remaining same, would she still be able to purchase all the things she used to buy in the previous year?

Briefly explain your answer

………………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

6. Suggest three financial strategies that you believe if Emma could adopt can help her

Minimize the effect of the inflation on her living

………………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

SECTION A: READ THE PASSAGE AND ANSWER QUESTIONS 1-3

Emma, a monthly salaried worker, received 1,300 cedis as her net salary; she heard that this year’s inflation is at 18%. This situation caused prices to soar so high that she complained about everything she buys. In the previous year she was able to buy herself, dresses, a basket of foodstuffs, a small bag of oranges, a dozen of drinks and her transportation. However, this year, she couldn’t afford the full bag of oranges but half,     and only 6 drinks after the other expenses.

1. From above, what is Emma’s nominal income?

………………………………………………………………………………………………………

2. What is her real income?

………………………………………………………………………………………………………

3. What is the difference between her real incomes for this year and last year?

............................................................................................................................................................

4. How much does Eyram need now to be able to have all the things she used to have previously?

………………………………………………………………………………………………............

5. Eyram’s salary had increased by 200 cedis this year, with the inflation remaining same, would she still be able to purchase all the things she used to buy in the previous year?

Briefly explain your answer

………………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

6. Suggest three financial strategies that you believe if Emma could adopt can help her

Minimize the effect of the inflation on her living

………………………………………………………………………………………………………

………………………………………………………………………………………………………

………………………………………………………………………………………………………

Chemical reactions are often described using a three state model:

Reactants→Transition State→ProductsReactants→Transition State→Products

In most cases the energy of the transition state is much higher than the energy of the reactant state. This means that the reaction cannot proceed until there is a random thermal fluctuation large enough to `kick' the reactant molecule(s) up to the transition state energy. Say we have a reaction in which the transition state is 9.0×10⁻²⁰ J above the reactant state.

a.) Calculate the ratio of the probability the system is in the transition state to the probability that it is in the reactant state (P_TS/P_R) at 37 C.

P_TS/P_R = (7.3 x 10^-10 is correct)

b.) Use your answer above to estimate the time it takes for the reaction to occur spontaneously at 37 C. Assume that the system samples a new microstate every nanosecond (10⁻⁹ s).

[Hint: If you throw a 6-sided die, what is the probability you will get a 3? How many times would you expect to have to throw the die to get a 3? Using similar logic, use your answer in the first part to tell you how many times the system has to try before it gets a fluctuation that is big enough.]

time: (2.1 x 10^-8 s is incorrect)

c.) One way to speed up the reaction is to heat the system. If the temperature is increased to 1000 K, how long does it take for the reaction to occur?

time: (.009325 s is incorrect)

d.) In biological systems it is not feasible to accelerate reactions by heating them to 1000 K. Instead, the reactions rely on enzymes that catalyze reactions by lowering the energy of the transition state. If catalyzed reaction has a transition state energy 2.0×10⁻²⁰ J, what is the approximate reaction time? Use a temperature 37 C.

time: (6.52 x 10^-9 s is incorrect)

e.) Finally, estimate the uncatalyzed reaction time if the transition state is not a unique microstate, but actually an ensemble of 100 microstates. Use a temperature 37 C.

time: (4.675 x 10^-9 s is incorrect)

7) You are trying to decide whether to invest in a monthly income investment plan that promises a variable return each month. You will invest in it only if you are assured of an average $150 monthly income. After doing research, you find that for the past 400 months, the plan had investment returns with an average value of $170 and a standard deviation of $85. Should you invest in this plan? Use a significance level of ? = 0.01.

a) State the hypotheses in symbols. (2 points)

b) Use your calculator to perform a 1-Sample t-Test and report the test statistic and p-value. Do not make these calculations by hand. Instead, use the T-Test command in your graphing calculator found under STAT – TESTS. Write out what you entered in your calculator. (3 points)

c) Write a full conclusion for this test in the context of the problem (see problem 2b) (2 points)

d) Find a 98% confidence interval for the average value of the monthly income. Do not make these calculations by hand. Instead, use the TInterval command in your graphing calculator found under STAT – TESTS. Write out what you entered in your calculator. (3 points)

e) Does this confidence interval support your conclusion in part (d)? Explain. (2 points)

Roulette is one of the most common games played in gambling casinos in Las Vegas and elsewhere.

An American roulette wheel has slots marked with the numbers from 1 to 36 as well as 0 and 00 (the latter is called "double zero"). Half of the slots marked 1 to 36 are colored red and the other half are black. (The 0 and 00 are colored green.) With each spin of the wheel, the ball lands in one of these 38 slots.

One of the many possible roulette bets is to bet on the color of the slot that the ball will land on (red or black). If a player bets on red, he wins if the outcome is one of the 18 red outcomes, and he loses if the outcome is one of the 18 black outcomes or is 0 or 00. So, when betting on red, there are 18 outcomes in which the player wins and 20 outcomes in which the player loses. Therefore, when betting on red, the probability of winning is 18/38 and the probability of losing is 20/38.

When betting on red, the payout for a win is "1 to 1". This means that the player gets their original bet back PLUS and additional amount equaling their bet. In other words, they double their money. (Note: If the player loses they lose whatever amount of money they bet.)

Scenario 1: Mike goes to the casino with $400. His plan is to bet $100 on red 9 consecutive times or until he either has increased his total to $500 or has lost all of his money. What is the probability he will go bankrupt (i.e. end up with $0)? (Give your answer correct to four decimal places.)


(Hint: Set this problem up as an absorbing Markov Chain with 6 states where the states keep track of his current amount of money. The amount of money he has will always be $0, $100, $200, $300, $400, or $500. The states where he has $0 or $500 are absorbing states since he quits playing whenever one of these states is reached.


Scenario 2: Mike goes to the casino with $400 and will still be betting on red. As in Scenario 1, he will bet $100 each time he places a bet. However, instead of limiting himself to a maximum of 9 bets he decides to play indefinitely until he has reached $500 or goes bankrupt. If he uses this betting method, what is the probability he will eventually go bankrupt? (Give your answer correct to four decimal places.)

A box contains 4 red and 7 green marbles. You reach in and remove 3 marbles all at once.

(a) Find the probability that these 3 marbles are all red. (Enter your answer as a fraction.)

(b) Find the probability that these 3 marbles are all of the same color. (Enter your answer as a fraction.)

*Please show your work so I know how you got your answers. TY

F1 Wild Type : Red Eyes and Long Wings & Mutants: White Eyes and Short Wings

F2

What is the mode of transmission for each trait, autosomal recessive, autosomal dominant, or sex-linked recessive or sex-linked dominate? What is the recombination frequency?