Two thousand kilojoules of heat are added to 10 kg of air contained in a rigid container.

Question:

Two thousand kilojoules of heat are added to 10 kg of air contained in a rigid container. Calculate the final temperature and the entropy change of the air if the initial temperature and pressure are, respectively,
a) 200° C and 200 kPa,
b) 100° C and 400 kPa,
c) 400° C and 100 kPa. Assume constant specific heats from Table B-2.