Question

An ideal gas us heated at constant volume untill its temperature is three times the original temperature. it is then expanded isothermally till it reaches original pressure the gas is then cooled at constant pressure till it is restored to the original state. Determine the net work done by gas per kg .the initial temperature is 350 k.express your answer in term of R
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Answer 1

Answer:

it becomes liquid

because liquid temperature is 375k