Final answer:
To calculate the mass of magnesium chloride from 72g of magnesium, use the stoichiometry of the balanced equation. The mass of magnesium chloride that can be produced is 226.41g.
Step-by-step explanation:
To calculate the mass of magnesium chloride that can be produced from 72g of magnesium, we need to use the stoichiometry of the balanced chemical equation. The atomic ratio of Mg to Cl in MgCl2 is 1:2, which means for every mole of Mg, we need 2 moles of Cl. Firstly, we need to convert the mass of Mg to moles using its molar mass. We do this by dividing the mass of Mg by its molar mass of 24.31 g/mol.
Mass of MgCl2 = moles of Mg * molar mass of MgCl2 = (72g Mg / 24.31 g/mol) * (95.21 g/mol) = 226.41 g
Therefore, the mass of magnesium chloride that could be produced from 72g of magnesium is 226.41g.