In a chemical reaction, the total mass of the products _____.
must always be the same as the total mass of the reactants
can be greater or less than the total mass of the reactants
is always less than the total mass of the reactants in an open system
must be less than the total mass of the reactants
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In a chemical reaction, the total mass of the products must always be the same as the total mass of the reactants.
This principle is known as the law of conservation of mass, which states that mass cannot be created or destroyed in a chemical reaction.
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