What is the theoretical yield of copper produced by the reaction of: 0.2 g Al reacted with 3.5 g CuCl2 x H2O? (CuCl2 x H2O is a dihydrate when calculating the molecular weight) Hint.) First find the limiting reactant, then the molecular weights of copper by the aluminum and the (Copper Chloride times water)​

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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