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English, 24.09.2020 06:01 landowatson123

A chemical reaction takes place in a closed system. The mass of the reactants before the reaction was 35 grams. What must the mass of the products of the reaction be, according to the law of conservation of mass? a. 25 grams
b. 35 grams
c. 70 grams
d. 30 grams

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