Question

A S.T.P.how many litres of hydrogen can be obtained from the reaction of 500cm3 of 0.5M H2SO4 with excess zinc metals?(molar volume of H2 at stp=22.4dm3).

Answer 1

you are told that 1 mole of gas fills 22.4 Liters

so, how many moles of H2 were produced?