Question

Draw a first-law bar chart (see Figure 19.12) for the gas process in Figure EX19.9

Short answer

The work done and heat is same magnitude but heat is positive and work done is negative

Step-by-step solution

Definition of isothermal process 

Isothermal process that the temperature remain constant due to change of process

Finding the major points of the diagram

Based of the graph, the volume increase and energy decrease due to transfer from system to environment.

As temperature is constant the value of work done and heat is same but work done sign is negative and heat is positive.