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How do you know that mass is conserved in a chemical reaction?

The mass of the reactants is the same as the mass of the products.

The mass of the reactants is different from the mass of the products.

The mass of the reactants is greater than the mass of the products.

The mass of the reactants is less than the mass of the products.

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Answer:

The mass of the reactants is the same as the mass of the products.

Explanation:

  • According to the law of conservation of mass, the mass of the reactants should be equal to the mass of the products in a chemical equation.
  • Balancing chemical equations makes them obey the law of conservation of mass, since it makes the number of atoms of each element equal on both sides of the equation.
  • Therefore, for chemical equations to obey the law of conservation of mass, they should be balanced.