Consider the decomposition reaction:

$2NaHS{O}_4(s)longrightarrowN{a}_{2}S{O}_4(s)+H_{2}O(g)+S{O}_3(g),H=+231k\frac{J}{m}ol$

If $3\mathrm{.}60g$ of $NaHS{O}_4$ react, how much heat would be absorbed$?$

Consider the combustion of carbon:

$C(s)+O_2(g)longrightarrowC{O}_2(g)$

$H=-393k\frac{J}{m}ol$

a$.$ How many grams of carbon must be burned to produce $2556kJ$ of energy?

b$.$ How many grams of oxygen gas would have to react in order to produce $2556$

$kJ$ of energy?