A sample of ideal gas initially at a pressure of and a volume of expands at constant…

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A sample of ideal gas initially at a pressure of

1.0\times10^{5}\,\text{Pa}

and a volume of

2.0\,\text{L}

expands at constant pressure to a final volume of

5.0\,\text{L}

. During the expansion,

600\,\text{J}

of energy is transferred to the gas by heating. What is the change in the internal energy of the gas,

\Delta U

? (a)

+600\;\text{J}

(b)

+450\;\text{J}

(c)

+900\;\text{J}

(d)

+300\;\text{J}