What mass of H 2 is produced when 60.0 g of aluminum reacts with excess HCl?
Al(s) + HCl(aq) → AlCl 3(aq) + H 2(g)
A. 6.73 g
B. 12.1 g
C. 4.49 g
D. 2.22 g
E. 2.99 g
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