# Chemistry

A certain mass(m) of an impure iron sample of 40% purity ,is treated with an excess of HCl to give H2 that occupies 44.8 L at s.t.p ( Vm=22.4) where the yeild of the reaction is 0.8.

A) calculate m.
B) deduce the mass of HCl reacted.

1. See the response by Bob Pursley above.

posted by DrBob222

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