A given mass of gas has a pressure of 80Nm-2 at a temperature of 47oC….

Physics WAEC 1988

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

  • 46.0 Nm-2
  • 75.0 Nm-2 checkmark
  • 80.0 Nm-2
  • 85.3 Nm-2
  • 139.4 Nm-2

The correct answer is: B

Explanation

P1/T1 = P2/T2

80/(273+47) = P1/(273+27) = 75Nm-2
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