Question #8b77a

1 Answer
Dec 12, 2017

611g

Explanation:

Number of mols of Mg = "mass (g)"/"Relative Molecular Mass (g per mol)"mass (g)Relative Molecular Mass (g per mol) = 156/2415624 = 6.5mols

Therefore, if we have 6.5mols of MgMg as a reactant, we must have 6.5mols of MgCl_2MgCl2 as a product after the reaction.

We can rearrange the equation previously used to calculate the mass of 6.5mols of MgCl_2MgCl2.

"mass (g)" = "Relative Molecular mass (g per mol)" * "Number of mols"mass (g)=Relative Molecular mass (g per mol)Number of mols = 94*6.5946.5 = 611g