Burning coal releases about per kilogram

PHYSICS · Subjective · CBSE · Physics · Nuclei · Nuclei

Problem

Burning coal releases about

3.0\times10^{7}\,\text{J}

per kilogram. Calculate how many times more energy is obtained from

1\,\text{g}

_{92}^{235}\text{U}

compared to

1\,\text{kg}

of coal, given that each fission of

_{92}^{235}\text{U}

liberates

200\,\text{MeV}

. (Use

N_A = 6.02\times10^{23}\,\text{mol}^{-1}

, molar mass of

_{92}^{235}\text{U}=235\,\text{g mol}^{-1}

1\,\text{eV}=1.6\times10^{-19}\,\text{J}