The gas in the cylinder was heated from 300K to 360K, the pressure became 81 Pa to determine the initial pressure.
| January 10, 2021 | education
Given:
T1 = 300 ° K,
T2 = 360 ° K,
p2 = 81Pa;
Find the initial pressure p1;
Since the volume of gas does not change, the process is isochoric, and the gas obeys Charles’s law:
Gas pressure is proportional to its temperature:
p1 / T1 = p2 / T2;
p1 = p2 * (T1 / T2) = 81 * (300/360) = 67.5Pa.
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