In the preparation of brass, which is copper-zinc alloy, 19.0 g copper is added to enough zinc to produce 108 g of brass. what is the percentage by mass of copper in the brass.

In the preparation of brass, which is copper-zinc alloy, 19.0 g copper

1.	In the preparation of brass, which is copper-zinc alloy, 19.0 g copper is added to enough zinc to produce 108 g of brass. what is the percentage by mass of copper in the brass.
Answer» tion:TOTAL mass = 127 g% of CU = 19/127 * 100 = 14.9 %THEREFORE, % of Zn = 85.1 %