n Li = m Li / Mr Li
n Li = 20 / 7
n Li = 2.86 mol
n H2SO4 = m H2SO4 / Mr H2SO4
n H2SO4 = 98 / 98
n H2SO4 = 1 mol
H2SO4 is the limiting reactant
n H2 = (coef. H2 / coef. H2SO4) • n H2SO4
n H2 = (1/1) • 1
n H2 = 1 mol
m H2 = n H2 • Mr H2
m H2 = 1 • 2
m H2 = 2 gr
