MCQ
What are the values of $N$ and $M\ ?$


- A$6, 6$
- B$6, 4$
- ✓$4, 4$
- D$3, 3$


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(Given) $\Delta H^o_f (CaCO_3,s) = -1207 \, \frac{kJ}{mol}$
$\Delta H^o_f \,(CaO,s) = -635 \,kJ/mol$
$\Delta H^o_f \,(CO_2.g) = -394 \,kJ/mol$
