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What is the composition (C'Pb) of Lead (Pb), in atom percent, of an alloy that consists...

What is the composition (C'Pb) of Lead (Pb), in atom percent, of an alloy that consists of 5.5 wt% Pb and 94.5 wt% Sn (Tin)? Given: APb=207.2 g/mol ASn=118.71 g/mol

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