Physics WAEC

A given mass of gas has a pressure of 80Nm−² at a temperature of 47°C. If the temperature is reduced to 27°C with the volume remaining constant, the new pressure is

A. 46.0 Nm−²
B. 75.0 Nm−²
C. 80.0 Nm−²
D. 85.3 Nm−²
E. 139.4 Nm−²

Correct Answer:

Option B – 75.0 Nm−²

Explanation

P1/T1 = P2/T2

80/(273+47) = P1/(273+27) = 75Nm−²

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5 years ago

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