Question 20How many grammes of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves in 500cm3 of 6mol/dm3 of hydrochloric acid according to the equation? Mg + 2HCl → MgCl2 + H2 (Mg=24, cl=35.5, H=1)A.0.7gB.0.5gC.0.12gD.1.2gObjective Show full explanation