(A)
Interpretation:
Determine the initial volume, final volume, work and heat transfer.
Concept Introduction:
Write the expression to calculate the number of moles in nitrogen.
Here, molecular weight of nitrogen is MW and mass of nitrogen is M.
Write the expression to calculate the initial volume.
Here, initial temperature and pressure is
Write the expression to calculate the final volume.
Here, final temperature and pressure is
Write the energy balance around the compressor.
Here, time is t, total mass of the system is M, specific internal energy of the system is
(B)
Interpretation:
Determine the initial volume, final volume, work and heat transfer.
Concept Introduction:
Write the expression to calculate the initial molar volume by using the van der Waals equation.
Here, constants are a and b respectively.
Write the expression to calculate the initial volume.
Write the expression to calculate the final molar volume by using the van der Waals equation.
Write the expression to calculate the final volume.
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