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In a piston - cylinder system, initially 0 . 1 5 m of nitrogen gas is at a temperature of 3 5 0 K .

In a piston-cylinder system, initially 0.15 m of nitrogen gas is at a temperature of 350 K. The mass of the piston is 250 kg and the cross-sectional area is 0.1 m. The ambient pressure is 1 bar and the gravitational acceleration is 10 m/s. Assuming that nitrogen gas obeys the Redlich-Kwong equation, calculate the heat transferred to the gas for the following situations.
a) The piston is fixed at the initial level and the final temperature and pressure are 365 K. and 1.32 bar, respectively.
b) The piston is released and the temperature reaches 361 K.
Cv 20.8 J/mol.K
C-29.0 J/mol.K
NOTE: In the calculations, it is expected that the numerical value of each parameter in the equations will be substituted and detailed calculations will be shown.

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