Practice question · Numerical answer
A gas at constant volume has a pressure of 120 kPa at 300 K. Compute its pressure in kPa at 400 K.
Hints
- At constant volume, pressure is proportional to absolute temperature.
- Compute 120 x 400/300.
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160 (answers within ±2 count)
Why
kPa. This proportionality is the principle of the constant-volume gas thermometer.
Practise The Zeroth Law and Thermodynamic Coefficients
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