Chapter 13, Problem 95E

What is the minimum amount of $\text{6}\text{.0}\text{M}{\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$ necessary to produce 15.0 g of ${\text{H}}_{\text{2}}\left(g\right)$ according to the reaction:

$\text{2}\text{Al}\left(s\right)+3{\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}\left(aq\right)\to {\text{Al}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_3\left(aq\right)+\text{3}{\text{H}}_{\text{2}}\left(g\right)$