How many grams of MgCl2 can be produced from 5 grams of Mg?

Question

Based on the equation Mg + 2HCl  → MgCl₂ + H₂

Answer 1

Hello, Niama,

First, determine the number of moles in 5 grams of Mg by dividing by it's molar mass (24.4). I get 0.205 moles Mg. The balanced equation promises us that it will deliver the same number of moles of MgCl₂. To find grams MgCl₂, multiply by it's molar mass (95.2) to yield grams MgCl₂.

I hope this helps,

Bob