Chemistry

Problem

A sample of gas initially occupying

2.0\,\text{L}

expands against a constant external pressure of

1.1\,\text{atm}

until its volume reaches

5.5\,\text{L}

. During the expansion the system absorbs

350\,\text{J}

of heat from the surroundings. Calculate (a) the work associated with the expansion in joules and (b) the resulting change in internal energy,

\Delta U

, of the gas.