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Suppose you are hired to determine the true average amount of money that college students make while working on-campus jobs. If you want to be 95% confident that you are within $100 of the actual value, how many students would you need to survey? Assume that the true standard deviation is $600.  Reminder: It’s impossible to survey a fraction of a college student.    

Part 1. Provide the curved arrow mechanism for 2 of the following 4 reactions. No response is required below, all work needs to be shown on scratch paper sent to Dr. Metz. Part 2. How many curved arrows are included for each mechanism provided. (Answers to this question must be provided below in order to receive credit for both parts 1 and 2. (Answers provided for part 1 must align with part 2 in order to receive credit for part 1 responses.)  

Refer to the following conformations (A, B and C) of pentane Part 1: Assuming each structure below can no longer rotate, label each conformation below as either anti, gauche, or eclipsed. (Work for the question will need to be provided below in order to receive credit) Part 2. Identify which of the three conformations of pentane is the most stable conformation. (Work for the question will need to be provided below in order to receive credit)  Part 3. Draw the Newman projection of the most stable stable conformation of pentane. (Drawings of each Newman projection will need to provided in the work sent to Dr. Metz)  

Review the bond-line structures below. In each case, one atom one atom is missing a formal charge. Identify the atom that should bear this charge and calculate the formal charge. On your scratch paper show work for this problem and show the final structure with the correct location of the formal charge. (The identify of the atom, carbon, oxygen, nitrogen, or hydrogen and the charge associated with it should be included  in the space below to receive credit) a. b.

Review the structure of oxytocin. This naturally occurring hormone is sometimes referred to as the “cuddle hormone” and plays a key role in feelings of trust and attachment towards another person. Identify 3 unique (different) functional groups present in oxytocin. 

Part 1. Identify the major organic product for the following chemical reaction. Ensure that appropriate stereochemistry is displayed when applicable.. (Answer to this must be submitted with the work scanned and sent to Dr. Metz after the exam) Part 2. Which mechanism, SN2, SN1, E1, or E2, does this reaction proceed through? (Answers to these questions must be provided in the space below in order to receive credit – this question must be answered to receive credit Part 1)

For the following bond-line structures identify the number of carbon and hydrogen atoms present. (Final answers to this question must be included in the space below to receive credit) Structure a. b.   c.   d.

Part 1. Draw the chair conformations for cis-1,4-dimethylcyclohexane and trans-1,4-dimethylcyclohexane.( There should be 2 chair structures provided per cyclohexane ring). Note: You do not need to attempt to draw these structures on Canvas. Drawings of each chair conformation will need to provided in the work sent to Dr. Metz Part 2. Rank the chair conformation stability, 1 being the most stable and 4 being the least stable conformation, if there is a tie state which conformations are of equal stability. (Answers to this question will need to be provided with the structures sent to Dr. Metz after the exam) Part 3. Which isomer of 1,4-dimethylcyclohexane, cis or trans, is associated with the most stable conformation? (Answers to this question needs to be provided in the space below in order to receive credit)

Designate each alkene as either the (cis or trans) OR (E or Z) isomer. (Answers to this question needs to be provided in the space below in order to receive credit) a.   b.

Refer to the following chemical reaction:    AgNO3 (aq) + Na3PO4 (aq)                               a. For the following metathesis reaction: Provide the balanced molecular equation and net ionic equation. Balanced equations must include appropriate charges and states of matter. Work for this answer needs to be completed on your scratch paper and sent in the work sent to Dr. Metz after the exam is finished. b. Identify the spectator ions for the reaction listed above. (Final answers to this question must be included in the space below to receive credit) c. Identify the precipitate formed in the reaction listed above. (Final answers to this question must be included in the space below to receive credit)