which law of chemical combination is illustrated by the fact that 168 g of fe(iron) reacts with 72 g of water to form 232 g Fe3O4 and 8g H2

Answer 1

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Answer 2

Law of conservation of mass.
Fe + H2O ==> Fe3O4 + H2
168 + 72 = ...232 + 8
........240 = 240
Matter is noither created nor destroyed.