Stoichiometry
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

12712 J
4576 J
13728 J
19206 J

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Stoichiometry
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

Temperature & pressure
Number of intermediate chemical reactions involved
State of aggregation & the state of combination at the beginning & the end of the reaction
None of these

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