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The volume of a sample of an ideal gas c...

The volume of a sample of an ideal gas contracts from `8.4 L` to `4.2 L` as a result of an applied pressure of 1.5 atm. The system also evolved `830 J` of heat during the contraction. Find `Delta U` for this change in state.
Strategy : According to , to find `DeltaU`, we must know `q` an `w`. Since heat flows from system to surrounding, the value of `q` is given as `- 830 J`. The value of `w` can be calculated by

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