Question

For the reaction shown, calculate how many grams of oxygen form when each quantity of reactant completely reacts.
2KClO 3 (s)→2KCl(s)+3O 2 (g) 2\;{\rm{KClO}}_3 {\kern 1pt} \left( s \right)\; \rightarrow \;2\;{\rm{KCl}}\left( s \right) + 3\;{\rm{O}}_2 {\kern 1pt} \left( g \right)