6. Which of the following is not an IR vibrational mode?

A. Stretching
B. Scissoring
C. Rocking
D. Rolling

7. Which of the following will oscillate the fastest?

A. A large mass on a weak spring
B. A large mass on a stiff spring
C. A small mass on a stiff spring
D. A small mass on a weak spring

8. In the equation, A = ε bc, what quantity is represented by “ε”?

A. Absorbtivity
B. Molar absorbtivity
C. Path length
D. None of these

9. Why must the voltage supply to a tungsten lamp be very stable?

A. Because if it wasn’t, the lamp would bum out
B. Because the amount of energy the lamp emits is proportional to the fourth power of the operating voltage
C. Because the lamp will only function at a specific voltage
D. All of the above

10. Where does a carbonyl (C=0) stretch appear in an IR spectrum?

A. 1740-1720
B. 1870-1650
C. 3640-3250
D. 160-110