Two moles of an ideal monatomic gas go through the cycle ?abc?. For the complete cycle, 800 J of heat flows out of the gas. Process ab is at constant pressure, and process ?bc is at constant volume. States ?a and ?b have temperatures Ta = 200 K and Tb = 300 K. (a) Sketch the pV-diagram for the cycle. (b) What is the work W for the process ?ca??

Solution 45P Step 1: Data given Total heat in the gas Q = 800 J Temperature at a T a 200 K Temperature at b T b 300 K n = 2 We need to find work done W for the proces ca The pv diagram is