- A$\Delta H = \Delta E - P\,\Delta V$
- ✓$\Delta H = \Delta E + P\,\Delta V$
- C$\Delta E = \Delta V + \Delta H$
- D$\Delta E = \Delta H + P\,\Delta V$
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$\begin{array}{*{20}{c}}
{\,\,\,\,\,C{H_3}} \\
| \\
{C{H_3} - C - ONa} \\
| \\
{\,\,\,\,\,C{H_3}}
\end{array}\, + \,C{H_3}C{H_2}Cl\,\xrightarrow{{ - NaCl}}\,$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - O - C{H_2} - C{H_3}} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
is called

The heat of the reaction $2Mg + Si{O_2} \to 2MgO + Si$ is......$kJ$
then which one is not correct
$(1)$ $n = 1,\,l = 0,\,m = 0$
$(2)$ $n = 2,\,l = 0,\,m = 0$
$(3)$ $n = 2,\,l = 1,\,m = 1$
$(4)$ $n = 3,\,l = 2,\,m = 0$
$(5)$ $n = 3,\,l = 2,\,m = 0$