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Mass Percent Equation

by 00_Furon
Tags: equation, mass, percent
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Feb28-10, 03:40 PM
P: 2
Brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows:

Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)

Cu does not react with HCl. When 0.5065 g of a certain brass alloy is
reacted with excess HCl, 0.0985 g of ZnCl2 is eventually isolated.

What is the composition of the brass by mass? (i.e., m%Cu, m%Zn)
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Mar3-10, 02:36 PM
P: 503
Gnerally, your required to make some kind of attempt if possible.

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