Three kilo mole nitrogen gas (CP = 29.1 kJ/kmol K and CV = 20.8 kJ/kmol K) at 350 K is taken in a rigid container and is heated to 550 K. How much heat must be supplied, if the mass of the vessel is 100 kg and its specific heat is 0.5 kJ/kg K? (b) Two kilo mole nitrogen is taken in a piston/cylinder arrangement at 500 K. Determine the quantity of heat extracted from the gas to cool it to 350 K at constant pressure if the heat capacity of the container is negligible

Introduction to Chemical Engineering Thermodynamics
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ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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4(a) Three kilo mole nitrogen gas (CP = 29.1 kJ/kmol K and CV = 20.8 kJ/kmol K) at 350 K is
taken in a rigid container and is heated to 550 K. How much heat must be supplied, if the mass of
the vessel is 100 kg and its specific heat is 0.5 kJ/kg K?
(b) Two kilo mole nitrogen is taken in a piston/cylinder arrangement at 500 K. Determine the
quantity of heat extracted from the gas to cool it to 350 K at constant pressure if the heat capacity
of the container is negligible.

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