1. Fig. 15-3 Graph of absolute pressure versus temperature for a constant-volume low- density gas thermometer.

2. Fig. 15-6 (a) We can visualize the forces between neighboring atoms by imagining them to be connected by springs that are easier to stretch than to compress. (b) Graph of potential energy versus distance between neighboring atoms shows that the forces are not symmetrical.

3. Fig. 15-7 The volume of one gram of water in the temperature range from 0 o C to 10 o C. By 100 o C the volume will have increased to 1.034 cm 3. If the coefficient of volume expansion were constant the curve would be straight.

4. Fig. 15-9 The same temperature change of the same system may be accomplished by: (a) doing work on it or (b) adding heat to it.

5. Fig. 15-10 specific heat capacity of water as a function of temperature. ‘The value of c varies by less than1% between 0 o C and 100 o C.

6. Fig. 15-12 Graph of temperature versus time for a specimen of water initially in the solid phase (ice). Heat is added to the specimen at a constant rate.