Answer:
[tex]364.575~ \text{grams of Mg.}[/tex]
Explanation:
[tex]\text{1 moles of Mg} = 24.305~\text{grams of Mg.}\\\\\text{15 moles of Mg} = (24.305\times 15)~ \text{grams of Mg}\\\\~~~~~~~~~~~~~~~~~~~~~=364.575~ \text{grams of Mg.}[/tex]
