Stephanie conducts an experiment in which she combines 10.0 grams of zinc metal with 25.0 grams of bromine. Which of the following MOST strongly substantiates her assertion of mass conservation?(1 point)
Responses

The final product's mass will be equivalent to the disparity between the two masses, amounting to 15.0 grams.
The final product's mass will be equivalent to the disparity between the two masses, amounting to 15.0 grams.

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

The final product's mass will equate to that of the zinc metal, totaling 10.0 grams.
The final product's mass will equate to that of the zinc metal, totaling 10.0 grams.

The mass of the final product will match that of the bromine, totaling 25.0 grams.
The correct answer is: The mass of the final product will be equal to the total mass of both reactants, 35.0 grams. This response aligns with the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction.
Are u sure
Yes, I am sure. 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 reaction. In this case, the reactants are 10.0 grams of zinc and 25.0 grams of bromine, so the total mass of the reactants is 35.0 grams. Therefore, the mass of the final product should also be 35.0 grams.
Question
The chemical equation for the reaction between magnesium (Mg) and hydrochloric acid (HCl) is shown.
Mg + 2HCl → MgCl2 + H2
Stacy initially weighs both the magnesium and hydrochloric acid, registering a combined mass of 55 grams. Subsequently, post-reaction, she assesses the mass of the resultant products, magnesium chloride (MgCl2) and hydrogen (H2), and once more records a total mass of 55 grams. Does Stacy's data substantiate the law of conservation of matter, and if so, what is the rationale behind this assertion?
(1 point)
Responses
Yes, it does, as her data shows that the mass of the products is greater than the mass of the reactants.
Yes, it does, as her data shows that the mass of the products is greater than the mass of the reactants.
Yes, her data supports the law of conservation of matter because the mass of the reactants is identical to the mass of the products.
Yes, her data supports the law of conservation of matter becaus…
The correct answer is: Yes, her data supports the law of conservation of matter because the mass of the reactants is identical to the mass of the products. According to the law of conservation of matter, the total mass of the reactants must be equal to the total mass of the products in a chemical reaction. In this case, Stacy's data shows that the initial combined mass of the reactants (magnesium and hydrochloric acid) is 55 grams, and the total mass of the products (magnesium chloride and hydrogen) is also 55 grams. This confirms that there is no mass loss or gain during the reaction and supports the law of conservation of matter.
The correct answer is: "The mass of the final product will be equal to the total mass of both reactants, 35.0 grams."
To understand why this choice is the correct answer, let's consider the law of conservation of mass, which states that mass is neither created nor destroyed during a chemical reaction. In other words, the total mass of the reactants should be equal to the total mass of the products.
In this experiment, Stephanie combines 10.0 grams of zinc metal with 25.0 grams of bromine. According to the law of conservation of mass, the total mass of the reactants (10.0 grams of zinc + 25.0 grams of bromine) should be equal to the total mass of the products.
Therefore, the final product should have a mass of 35.0 grams, which is the sum of the masses of the reactants.
Hence, the correct answer is: "The mass of the final product will be equal to the total mass of both reactants, 35.0 grams."