1.662 grams of magnesium metal is dropped into 3.00M HCl. The hydrogen gas produced is collected over water at?

1.662 grams of magnesium metal is dropped into 3.00M HCl. The hydrogen gas produced is collected over water at 20.˚C. If the atmospheric pressure is 765.5 torr, what volume would the hydrogen gas occupy? (The vapor pressure of water at 20.˚C is 17.5 torr.)