The temperature at which 4 moles of hydrogen gas would exert a pressure of 256 KPa is 431.4 K
The temperature of the gas can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
Divide both side by nR
T = PV / nR
T = (2.53 × 56) / (4 × 0.0821)
T = 431.4 K
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