A chemist isolates a copper sulfide that contains 0.635 g of Cu and 0.160 g of S
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Problem
A chemist isolates a copper sulfide that contains 0.635 g of Cu and 0.160 g of S. If another pure sample of the same compound contains 2.54 g of Cu, what mass of sulfur should it contain to be consistent with the first sample?
(a) 0.511g
(b) 1.27g
(c) 0.640g
(d) 0.320g