A piece of brass (Cu and Zn) weighs 12.9 gin air. When completely immersed in water, it weights 11.3 g. The relative densities of Cu and Zn are 8.9 and 7.1 respectively. Calculate the mass of copper in the alloy

A piece of brass (Cu and Zn) weighs 12.9 gin air. When completely imme

1.	A piece of brass (Cu and Zn) weighs 12.9 gin air. When completely immersed in water, it weights 11.3 g. The relative densities of Cu and Zn are 8.9 and 7.1 respectively. Calculate the mass of copper in the alloy
Answer» 6.6 gm 7.6 gm 8.6 gm 5.6 gm Answer :B