Pls help with these organic chemistry questions.

CPS Question: You determine a MF of C8H10 and the three fragments below. How many structures are possible? Cum2CH3CH3 DRAW STRUCTURE(S) HERE There are thus possible different structures ( constitutional isomers). CPS Question: Given a MF of C5H7NO2 a) Calculate C5Hmax : What are the maximum H's you can put on 5 carbons? b) Correct the MF: After correcting for N and O, the number of H 's in C5H7NO2 "becomes" c) How many EU's in C5H7NO2 ? a) C5Hmax : C H b) C5H7NO2 "became" C H subtract ' b ' from ' a ' and convert to EU: Which of the following does NOT have MF=C6H12 ? HINT: Ask me CPS Question: Draw (ECSF) the structures of 1-hexyne, 2-hexyne, and 3-hexyne. Which will have the weakest CC stretch? Enter your answer as 1,2 , or 3 . Key IR region \#1: The ' +/3000cm1, Region CPS Question: Which of the molecules below would show CH stretching just above 3000cm1