At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq) and considering the balanced chemical equation for these reactions, answer the following question: what is the relationship between the factor R2 and the following factor, labeled R3:
R3 = Volume of H2 gas produced per mole of zinc that reacts.