For the following reaction that transforms a nitrile into an amide, explain how you will use IR spectroscopy to monitor the progress of the reaction.  (What signals would disappear and/or appear to let you know the reaction has been successful)

Calculate the degree of unsaturation for C5H5Br2NO.  Just type in the number.

Make sure to provide an answer for each of the four main questions below. Consider the following set of spectra. The notes above the signals in the proton NMR tell you the chemical shift, integration, pattern, and coupling constant (aka J value) Answer each question. 1. What do you see in the IR? Talk about signal and what bond it represents. 2. How many degrees of unsaturation? 3. What structural information can you take from the proton NMR?     – How many types of H? Do any of the chemical shifts tell you about the structure? 4.  What structural information can you take from the proton NMR?     – How many types of Carbon? Can you tell anything from the chemical shifts?

A parent peak (or molecular ion) with an odd mass to charge ratio (m/z) is likely to have 

In the carbon NMR of this combined spectra problem, there is a peak in the carbon NMR at 207. What functional group is responsible for this carbon signal?

Suppose the demand for a product x weeks after it launches is given by

**Partial Credit Problem** ( 6 points total) Note: To receive any credit, show all supporting work and use the Calculus techniques developed not the shortcuts with your calculator unless otherwise indicated.    For the function

Iodine-125 is a radioactive substance used in the treatment of some cancers. The amount of Iodine-125 in nanograms at time t days is modeled by: 

Extra Credit (earn up to 3 points) Can you have a point on the graph of a function that is both an inflection point and a critical point?  Explain your answer and provide a sketch to receive any credit.  

Solve  for t.  Round answer to two decimal places.