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12)A kettle containing 6 kg of water has just reached its boiling point. How much energy,...

12)A kettle containing 6 kg of water has just reached its boiling point. How much energy, in joules, is required to boil the kettle dry?

_____J

13)How much heat would it take to melt a 4 kg block of ice?

_____kJ

14)How much heat is required to convert 200 g of ice at -9°C to water at 9°C?

_____ cal

15)What is the change in length of a metal rod with an original length of 3 m, a coefficient of thermal expansion of 0.00002/°C, and a temperature change of 19°C?

_____ mm

16)A steel railroad rail is 24.3 m long. How much does it expand during a day when the low temperature is 18°C and the high temperature is 40°C?

_____ mm

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