This balanced chemical equation shows that 1 mole of magnesium reacts with 2 moles of hydrochloric acid to form 1 mole of magnesium chloride and 1 mole of hydrogen.

Swirl to speed up reaction. Make sure all the Mg is emptied out of the balloon. Each flask contains 0.1 mol of HCl. Magnesium is present in the following amounts: Flask 1 0.0125 mol Mg 0.1 mol HCl ...