StoichiometryMass–Volume Stoichiometry1Choose the best answerConsider the reaction: Ca + 2HCl → CaCl₂ + H₂ What volume of H₂ at STP (273 K and 1 atm) is produced when 20 g Ca reacts with excess HCl?A22.4 dm³B11.2 dm³C24.0 dm³D1.12 dm³ Like 0 Discuss 0Share