The enthalpy of transition of crystalline boron to amorphous boron at is

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

The enthalpy of transition of crystalline boron to amorphous boron at

1500^{\circ}\text{C}

0.4 \text{ kcal mol}^{-1}

. Assuming atomic mass of boron 10, the change in enthalpy of transition 50 g boron from crystalline to amorphous form is .....