law of multiple proportions
noun
: a statement in chemistry: when two elements combine in more than one proportion to form two or more compounds the weights of one element that combine with a given weight of the other element are in the ratios of small whole numbers
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“Law of multiple proportions.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/law%20of%20multiple%20proportions. Accessed 31 Oct. 2025.
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