Blehblah17 Blehblah17 16-10-2022 Chemistry Answered Determine the milliliters of H₂ produced from 0.125 g Mg reacting with an excess of HCI at STP. Remember that 1 mol of an ideal gas has a volume of 22.7 L at STP. Mg(s) + 2 HCl(aq) → MgCl₂(aq) + H₂(g)