Chemistry, 05.07.2019 22:00, bhadd2001

If 2 grams of element x combine with 4 grams of element y to form compound xy, how many grams of element y would combine with 21 grams of x to form the same compound?

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If 2 grams of element x combine with 4 grams of element y to form compound xy, how many grams of ele...