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A system undregoes a change of state dur...

A system undregoes a change of state during which `100kJ` of heat is transferred to it and it does `50kJ` of work. The system is brought back to its original state through a process during which `120kJ` of heat is transferred to it. Find the work done by the system in the second process.

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The correct Answer is:
`170kJ`
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