Chapter 4, Problem 71E

Chromium(II) sulfate. ${\text{CrSO}}_{\text{4,}}$ is a reagent that has been used in certain applications to help reduce carbon-carbon double bonds (CldbondlC) in molecules to single bonds (ClbondlC). The regent can be prepared via the following reaction.
$\text{4Zn}\left(\text{s}\right){\text{+K}}_{\text{2}}{\text{CrO}}_{\text{7}}\left(\text{aq}\right){\text{+7H}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)\to {\text{4ZnSO}}_{\text{4}}\left(\text{aq}\right){\text{+2CrSO}}_{\text{4}}\left(\text{aq}\right){\text{+ K}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right){\text{+7H}}_{\text{2}}\text{O}\left(\text{I}\right)$
What is the maximum number of grams of ${\text{CrSO}}_{\text{4,}}$ that can be made from a reaction mixture containing 3.2 mol Zn, $\text{1}{\text{.7 K}}_{\text{2}}{\text{CrO}}_{\text{7}}$ and 5.0mol ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}\text{?}$