Directions: You may need to
use the reference tables to determine some values

and
formulas. All work including formulas and substitution needs to be shown for
any calculations. The final answer
should be rounded to the correct significant figures. SHOW YOUR WORK.

Convert the following
temperatures.

1. 50.^{o}C = ___________K

2. melting point Hg= ____________ K = ___________

^{o}C

3. Which of the following samples has the
lowest average kinetic energy? (circle)

a.
5g Fe(s) at 5
K

b.
10g Cu(s) at 0

^{o}C
c.
1g Co(s) at
273K

d.
50g Al(s) at 100

^{o}C
temperature changes from 16.0

^{o}C to 20.0^{o}C?
15.0g sample of sodium acetate as it crystallizes,
what is the experimental

heat of crystallization (H

_{c}) for sodium acetate?