\( 16^{*} \). Consider the following reaction
\[
Zn ( s )+2 HCl ( aq ) \longrightarrow ZnCl _{2}( aq )+ H _{2}(g)
\]
If 520 mL . of \( H _{2}(g) \) is collected over water at \( 28^{\circ} C \) and the atmospheric pressure is 1 atm . If vapour pressure of water at \( 28^{\circ} C \) is 28.3 mm Hg . Then the amount of Zn (in g ) taken at the start of the reaction is (assuming all the \( Zn ( s ) \) gets converted in product, molar mass of Zn is \( 65 g / mol ] \)
