Blog

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.

Section 1: Blackboard Matching Portion (20 points)Select or input the best answer for each question. There is no need to submit your work for this section.

Select TRUE after you’ve worked the following problems on your own piece of paper. Remember that you’re also being scored at the end of the exams for neatness of work.Use the Laplace transform method to solve the given initial value problem for y(0)=0 and y'(0)=0.y”-4y’+4y=t3e2t

Find L{f(t)} for each given f(t).