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A piece of brass (alloy of zinc and copper) weighs 12.9 gm in air. When completely immersed in water it weighs 11.3 g. What is mass of copper contained in it. (specific gravities of copper and zinc are 8.9 and 7.1 respectively) :- (1) 10.5 g (2) 5.6 gm (3) 7.6 g (4) 15.0 gm |
| Answer» A piece of brass (alloy of zinc and copper) weighs 12.9 gm in air. When completely immersed in water it weighs 11.3 g. What is mass of copper contained in it. (specific gravities of copper and zinc are 8.9 and 7.1 respectively) :- (1) 10.5 g (2) 5.6 gm (3) 7.6 g (4) 15.0 gm | |