Question

The $\Delta H < \Delta E$ bond energy is 430 kJ $E = mc^{2}$ and $N_{2} + 3H_{2} \rightarrow 2NH_{3}$ bond energy is $\Delta H$ for $\Delta U$ is $\Delta H = 0$. The $\Delta H = \Delta U$ bond energy is about.

• A. $\Delta H < \Delta U$
• B. $\Delta H > \Delta U$
• C. $C + O_{2} \rightarrow CO_{2}$
• D. $25^{o}C$

Answer 1

Answer: (D)

$25^{o}C$

Answer 2

$(\Delta E)$

$(\Delta H)$

or $\Delta H = \Delta E + W$

$W = \Delta E - \Delta H$.