Question

in the preparation of brass, which is a copper-zinc alloy, 19.0g copper is added to enough zinc to produce 108g of brass.
1. calculate the percentage (%) by mass of copper in the brass.
2. what is the percentage (%) by mass of zinc in the brass?

Answer 1

Answer:

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Answer 2

Answer:

mass % of copper =19g/108g*100

=17.59%

Zinc=100%-17.59%

=82.42%

Explanation: