A sample of gas is compressed by an aver...

A sample of gas is compressed by an average pressure of 0.50 atmosphere so as to decrease its volume from `400cm^(3)` to `200cm^(3)`. During the process 8.00 J of heat flows out to surroundings. The change in internal energy of the system is

`+2.13 J`

`+10.13J`

`-2.13J`

`-10.13J`

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