1. Q17. Thermal Behavior of Matter

2. The area of one of its faces increases by:
When the temperature of a copper penny is increased by 100 C°, its diameter increases by 0.17%.
The area of one of its faces increases by:
0.17%
0.34%
0.51%
0.13%
0.27%
<PowerClick><Answer>2</Answer><Option>5</Option></PowerClick>

3.  

4. the coefficient of volume expansion of mercury is 0.1 per F°
The mercury column in an ordinary medical thermometer doubles in length when its temperature changes from 95°F to 105°F. Choose the correct statement:
the coefficient of volume expansion of mercury is 0.1 per F°
the coefficient of volume expansion of mercury is 0.3 per F°
the coefficient of volume expansion of mercury is (0.1/3) per F°
the vacuum above the column helps to "pull up" the mercury this large amount
none of the above is true
<PowerClick><Answer>5</Answer><Option>5</Option></PowerClick>

5. Volume expansion V of the mercury occurs mainly in the bulb of the thermometer. The increase in length l of the mercury column is therefore given by
where A = area of cross section of column
V = total volume of mercury
with l = l, T = 10 F, we have
VC = volume of mercury column at 95  F

6. Steam at 1 atm and 100°C enters a radiator and leaves as water (at 1 atm and 80°C). Take the heat of vaporization to be cal/g. Of the total energy given off as heat, what percent arises from the cooling of the water?
100 54 26 14
3.6
<PowerClick><Answer>5</Answer><Option>5</Option></PowerClick>

7. Loss of energy per gram of steam :
Percentage due to cooling of water :

8. Oxygen (molar mass = 32 g) occupies a volume of 12 liters when its temperature is 20°C and its pressure is 1 atm. Using R = literatm/moleK, calculate the mass of the oxygen:
6.4 g
10.7 g
16 g
32 g
64 g
<PowerClick><Answer>3</Answer><Option>5</Option></PowerClick>