A 5.00 g sample of a metal mixture is 80.0 % Mg by mass
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
A 5.00 g sample of a metal mixture is 80.0 % Mg by mass. The magnesium reacts completely with excess HCl(aq) according to the equation
Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g)
Calculate the maximum mass, in grams, of H2(g) that can be produced from the sample.