A straight-line process is done on a monatomic ideal gas, as shown. The temperat

Question

A straight-line process is done on a monatomic ideal gas, as shown. The temperature of the gas at point A is 500.0 K and the temperature at point B is 300.0 K.

a) For the straight-line process shown, is work done ON the gas or BY the gas? For full points you need to explain your reasoning without doing a calculation.

b) What is the magnitude of work done?

c) Is heat added to the gas or removed from the gas? For full points you need to explain your reasoning.

Explanation / Answer

(a) Work is done by the gas. As the gas pushes to expand its volume and decrease its pressure.

(b) W = -PB(VB-VA) = - 1.0 (3.0 - 1.0)

W = -2J

Magnitude of W = 2J

(c) Since temperature of the gas drops, heat is removed from the gas.

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