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In a reaction, 1 mole of silver nitrate combines with 1 mole of sodium chloride.

AgNO3 + NaCl

Which statement about the product is justified by the law of conservation of mass?

(1 point)
Responses

There will be 2 moles of sodium (Na) in the product.
There will be 2 moles of sodium (Na) in the product.

There will be two molecules in the product.
There will be two molecules in the product.

There will be five atoms in the product.
There will be five atoms in the product.

There will be 1 mole of silver (Ag) in the product.

1 answer

The correct statement justified by the law of conservation of mass in this reaction is:

There will be 1 mole of silver (Ag) in the product.

This is because one mole of silver nitrate (AgNO3) contains one mole of silver (Ag) and does not change in the reaction, so the total amount of silver in the products remains 1 mole.

To break it down:

  • 1 mole of AgNO3 produces 1 mole of Ag.
  • 1 mole of NaCl does not contain silver, so the amount of silver does not increase or decrease; therefore, you have 1 mole of silver in the final product, which is a combination of the reactants resulting in AgCl (the precipitate) and NaNO3.

The other statements are not justifiable based on the law of conservation of mass regarding this reaction.