A student places a 2.50 gram sample of magnesium metal in a bottle and fits the bottle with a 2-hole stopper as shown in the diagram below. Excess hydrochloric acid is added to the bottle causing an exothermic chemical reaction generating hydrogen gas. As the reaction proceeds, the gas travels through the tubing to an inverted bottle filled with water, displacing the air as the hydrogen gas is collected. Mg(s)+2HCl(g)=MgCl2(s)+H2(g)

Using the balanced equation above, calculate the volume hydrogen gas produced in the experiment at STP.