The starting products of a chemical reaction are 92.6g of Hg and 7.4g of oxygen (O) gas. A scientist hypothesizes that the mass of the final product will be 100g total. What law supports the scientists hypothesis?

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Law of Conservation of Elements
Law of Conservation of Energy
Law of Conservation of Mass
Law of Conservation of Atoms

The law that supports the scientists hypothesis is the Law of Conservation of Mass. This law states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products, meaning that mass is conserved.

pick one

Law of Conservation of Mass