A gas in a sealed container is heated from 20\,^{\circ}\text{C} to 80\,^{\circ}\text{C} at constant volume. What happens to the average kinetic energy and the density of the gas?

Kinetic energy increases; density increases.

Kinetic energy increases; density remains constant.

Kinetic energy remains constant; density increases.

Kinetic energy remains constant; density decreases.

PH-2213

Internal energy

Physics · Secondary 4 · Medium · Internal energy

A gas in a sealed container is heated from

20\,^{\circ}\text{C}

80\,^{\circ}\text{C}

at constant volume. What happens to the average kinetic energy and the density of the gas?

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