4.5g of alloy of copper and zinc contains 3.5 g of copper.What weight of copper will be there in 18.9 g of alloy??
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in 4.5 gm of ally copper is 3.5 gm so zinc will be 1 gm
Copper : Zinc = 3.5 : 1 = 7 : 2
so copper in 18.9 gm alloy will be = (7/9)x18.9 = 14.7 gm
Copper : Zinc = 3.5 : 1 = 7 : 2
so copper in 18.9 gm alloy will be = (7/9)x18.9 = 14.7 gm
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