A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

Question

Accepted Answer

19206 J. The heat required is calculated using Q = n * Cp * ΔT. With n=3 moles, Cp=29.1 J/mole.°C, and ΔT = 250-30 = 220°C, Q = 3 * 29.1 * 220 = 19206 J.