Textbook Problem

Although we: generally think of combustion reactions as involving oxygen gas, other rapid oxidation reactions are also referred to as combustions. For example, if magnesium metal is placed into chlorine gas, a rapid oxidation takes place, and magnesium chloride is produced.

msp;  $\text{Mg}\left(s\right)+{\text{Cl}}_{\text{2}}\left(g\right) {\text{MgCl}}_{\text{2}}\left(s\right)$

at Volume of chlorine gas, measured at STP, is required to react completely with $\text{1}.0\text{2 g}$of magnesium?