Consider the reaction:

$$2 \mathrm{Al}(\mathrm{s})+3 \mathrm{H}_2 \mathrm{SO}_4(a q) \longrightarrow \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3(a q)+3 \mathrm{H}_2(g)$$

What minimum volume of $4.0 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$ is required to produce $15.0 \mathrm{~L}$ of $\mathrm{H}_2$ at STP?

What is the molarity of an aqueous solution that is $6.75 \%$ glucose $\left(\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6\right)$ by mass? (Assume a density of $1.03 \mathrm{~g} / \mathrm{mL}$ for the solution.)

What is the molarity of an aqueous solution that is $5.88 \%$ $\mathrm{NaCl}$ by mass? (Assume a density of $1.02 \mathrm{~g} / \mathrm{mL}$ for the solution.)

To what volume should you dilute $125 \mathrm{~mL}$ of $8.00 \mathrm{M} \mathrm{CuCl}_2$ solution so that $50.0 \mathrm{~mL}$ of the dilute solution contains $5.9 \mathrm{~g} \mathrm{CuCl}_2$ ?

To what final volume should you dilute $50.0 \mathrm{~mL}$ of a $5.00 \mathrm{M} \mathrm{KI}$ solution so that $25.0 \mathrm{~mL}$ of the diluted solution contains $3.25 \mathrm{~g}$ of $\mathrm{KI}$ ?