Question

Sophia performs an experiment in which she adds 10.0 grams of zinc metal to 25.0 grams of bromine. She claims that mass will be conserved during the reaction. Which of the following best supports her claim?

A.The mass of the final product will be equal to the mass of the zinc metal, 10.0 grams.

B. The mass of the final product will be equal to the difference between the two masses, 15.0 grams.

C. The mass of the final product will be equal to the mass of the bromine, 25.0 grams.

D. The mass of the final product will be equal to the total mass of both reactants, 35.0 grams.

Answer 1

D. The mass of the final product will be equal to the total mass of both reactants, 35.0 grams.

Step-by-step explanation:

The statement that best satisfies her claim that mass is conserved is that "the mass of the the final product will be equal to the total mass of both reactants, 35g".

The law of conservation of mass states that "in a chemical reactions in isolated systems, mass is neither created nor destroyed ". In simple terms, there is no mass loss or addition when chemical reactions go into completion.

• By virtue of this, one expects the mass of reactants and products to be the same.
• The combined mass of the reactant should be that of the product obtained.
• The last option expresses this law.