The piece of iron with a mass 102.9g was submerged in a graduated cylinder filled with water. The initial level of water was 20.0 ml. The density of iron is 7.86 g/ml. What was the level of water in the graduated cylinder after the iron was submerged?Calculate percent composition of the mixture containing 140.0 g of chalk, 80.5 g of sugar and 45.3 g of flour.How much heat do you need to heat the 30 g of water from 25 C to 50 C (SHwater = 1 cal/gC)
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