Suppose that you had a 0.23 cm thick window (0.23 x 10-2 m) conducting heat from the 38.7 C air outside to the 17.6 C air inside of a room. If the window were 1.81 m wide and 2.02 m tall, how much conductivity would give you heat conduction through the window at 4.2 x 103 J/s?

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?