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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)

Refer to the following balanced combustion reaction between methane, CH4, and molecular oxygen to produce carbon dioxide and water. (Final answers to each question must be included in the space below to receive credit)  CH4 (g) + 2 O2 (g) CO2 (g) + 2 H2O (l) (a) Assign the oxidation number to each atom on both reactants and products side of the balanced chemical equation (b ) Which atom is oxidized?  (c) Which atom is reduced?

I submitted the Exam 3 Study Guide Assignment prior to starting the exam.

My work for questions 3-7 is neat and in order, and I will submit a pdf of this work to get scored.