Problem 2

One mole of monatomic ideal gas is heated at constant pressure from

300\,\mathrm K

600\,\mathrm K

. Use

R=8.31\,\mathrm{J/(mol\,K)}

C_V=3R/2

C_P=5R/2

, and count work done by the gas as positive. (a) Find the first requested quantity. (b) Find the second quantity. (c) Determine the final result and check its units. (a) (a) Find the work done by the gas. (b) Find its internal-energy change. (c) Find the heat absorbed and verify the first law.

problems.proof.stepOf

problems.proof.prevStep problems.proof.nextStep

W=R\Delta T=2493\,\mathrm J

problems.proof.analysis

First identify the physical model and convention that match the stated setup. This fixes the signs used in the equations that follow.