A sample of is heated at constant volume from to

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

32.0\,\text{g}

sample of

\mathrm{O_2(g)}

is heated at constant volume from

250\,\text{K}

500\,\text{K}

. Given

R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}

, what is the increase in average kinetic energy per gram of

\mathrm{O_2}

, expressed in

\text{kJ g}^{-1}

? (a)

0.065\,\text{kJ g}^{-1}

(b)

0.195\,\text{kJ g}^{-1}

(c)

0.097\,\text{kJ g}^{-1}

(d)

9.7\,\text{kJ g}^{-1}