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16-02-2021
Chemistry

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What must be the same before and after a chemical reaction?

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michelle92503 michelle92503

16-02-2021

the total mass of all the substances taking part in the chemical reaction remain the same, so does the number of atoms.

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sophiyana sophiyana

17-02-2021

The total mass of the reactants and the total mass. Of the products

The number of molecules of each substances involved . In the chemical reaction

The number of atoms of each element involved in the same reaction

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