A mixture of 1.65 × 1021 molecules of X and1.85 x 1021 molecules of Y weighs 0.688 g. Themol. wt. of X is (Assume mol. wt, of Y is 187).
A mixture of 1.65×1021 molecules of X and 1.85×1021 molecules of Y weighs 0.688 grams. The molecular weight of X is ( if molecular wt of Y is 187 )