$(1).$ Enthalpy change from mass. P $64$

Consider this reaction:

$2F{e}_2{O}_3(s)4Fe(s)+3O_2(g),H=-1650kJ$

$($a$)$ is this endothermic or exothermic?

$($b$)$ If a student started with $16\mathrm{.}00g$ of iron$($III$)$ oxide, how much heat would be generated?