Hello Aspirant,

Hope you are doing great. When the 12g Mg reacts with dilute mineral acid to produce maximum hydrogen equal to 0.5 ml. You can calculate as through the No. of Moles of Mg= Moles of H2 and there for the no. of moles of Mg= 12/24 which is equal to 0.5ml. And you can even calculate any other reaction with the same procedure.

ALL THE BEST