Question

4.5 g of an alloy of copper and zinc contains 3.5 g of copper. What weight of copper will there be in 18.9 g of the alloy?​

Answer 1

Answer:

4.5 g of alloy contains 3.5 gm

so 1 gm of an alloy will contain 3.5/4.5 gm of copper=7/9 gm of copper

so 18.9 gm of alloy will contain (7/9)*18.9 gm of copper =14.7 gm of copper.

Step-by-step explanation:

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