Unsteady-State Energy Balances on Tanks: ConcepTest and Example Problem

Try to answer this ConcepTest and solve the example problem before using this module. Studies show that trying to answer the questions before studying material improves learning and retention. We suggest that you write down the reasons for your answers. By the end of this module, you should be able to answer these on your own. Answers will be given at the end of this module.

Image of a concepTest for the Unsteady-State Energy Balances for Tanks Module
Example Problem 1

A well-insulated tank contains 1.0 mol of an ideal gas (CP = 28 J/(mol K)) at 1.5 bar and 404 K. This tank is connected (by an insulated line with a valve) to an insulated, evacuated tank of the same volume. What is the temperature in each tank when the valve is opened until the pressure equalizes in the two tanks?

image to help understand an example problem in the Unsteady-State Energy Balances for Tanks Module