Cliffs AP Chemistry, 3rd Edition

12. Element Q occurs in compounds X, Y, and Z. The mass of element Q in 1 mole of each

compound is as follows:

Compound Grams of Q in Compound

X 38.00

Y 95.00

Z 133.00

Element Q is most likely:

A. N

B. O

C. F

D. Ir

E. Cs

Answer: C

All of the numbers are multiples of 19.00 (fluorine). Use the law of multiple proportions.

13. Which one of the following represents an intensive property?

A. temperature

B. mass

C. volume

D. length

E. heat capacity

Answer: A

The measured value of an intensive property does NOT depend on how much matter is being

considered. The formula for heat capacity C is C = m ⋅Cp, where m = mass and Cp= specific

heat.

Part II: Specific Topics