20 g of magnesium reacts with hydrochloric acid, generating

Last updated: 7/31/2022

20 g of magnesium reacts with hydrochloric acid, generating hydrogen gas according to the reaction below. The hydrogen gas is collected over water. Mg(s) + 2HCl(aq) → MgCl2 (aq) + H₂(g) If 2.97 L of hydrogen gas is collected at 760.0 mmHg and 20°C, what was the percent yield of the reaction?