Homework Help: chemistry

Posted by Cindy on Thursday, October 28, 2010 at 5:39pm.

A 2.000g sample of silver alloy was dissolved in nitric acid and then precipitated as AgBr. After drying, the sample of silver bromide weighed 2.000g. Calculate the percentage of silver in the alloy.

chemistry - DrBob222, Thursday, October 28, 2010 at 5:56pm
moles AgBr = grams/molar mass.
moles Ag = same since there is 1 Ag in 1 AgBr.
grams Ag = moles Ag x molar mass Ag

%Ag = (mass Ag/mass sample)*100 = ??
chemistry - Laura, Tuesday, September 13, 2011 at 8:19pm
57.42%

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