Two elements, r and q , combine to form two binary compounds. in the first compound, 18.5 g of combines with 3.00 g of q . in the second compound, 7.00 g of r combines with 4.50 g of q. show that these data are in accord with the law of multiple proportions. if the formula of the second compound is rq , what is the formula of the first compound

Explanation:

Dalton's law of multiple proportions tells us that when a chemical compound is to be formed, if we keep the quantity of one of the elements as fixed, the other element joins it in quantities that form products with the proportion of whole numbers.

in the first compound mass ratio of R respect to Q is and in the second compound mass ratio of R respect to Q is , dividing , so in the first compound, the element R is 4 times respect to element Q and we can say that this data is accord with the law of multiple proportions.

considering that the second compound is RQ then the first must be R4Q

b is the correct answer

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