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According To John Dalton's Observations When Elements Combine In A Compound

According to john dalton’s observations, when elements combine in a compound, the ratio of their masses is always the same. Added 1/17/2015 10:35:27 am this answer has been confirmed as correct and helpful. He transformed democritus' ideas into proper scientific theories. With many experiments, dalton formulated a series of hypotheses and theories on the ratios in which elements combine in chemical reactions, which have come to be known.