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College Physics (Urone)
Found in: Page 468

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Short Answer

A constant-volume gas thermometer contains a fixed amount of gas. What property of the gas is measured to indicate its temperature?

A constant-volume gas thermometer uses the thermometric property pressure for the measurement of temperature. The volume of the gas in the thermometer is constant, so, the temperature reading of the thermometer is directly proportional to the pressure and vice versa. This is used to measure the temperature in a constant volume thermometer.

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Step by Step Solution

Step 1: Constant-volume gas thermometer

The constant volume gas thermometer is an apparatus used to measure the temperature of a substance, based on the constant-volume gas law.

Step 2: Relation between temperature and pressure in a gas thermometer

The volume of the gas in a constant volume thermometer is also constant, therefore, the temperature reading of the thermometer is directly proportional to the pressure and vice versa. This direct relation is used to measure the temperature in a constant volume thermometer.

TαP

Where T, P, and V are the temperature, pressure, and volume of the gas.

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