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Law of definite proportions
/lˈɔː ɒv dˈɛfɪnət pɹəpˈɔːʃənz/
/lˈɔː ʌv dˈɛfɪnət pɹəpˈoːɹʃənz/Law of definite proportions
01
(chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight
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