Question

A chemical reaction produces two new substances, and each product has a mass of 25 grams. What was the total mass of the reactants?_______________
Explain.

Answer 1

Well, according to the law of conservation of mass, the total mass of the reacting atoms must equal the total mass of the final rearranged products produced through the reaction. Assuming that both products are the only products produced, it would constitute the total matter produced, and since each product has a mass of 25 grams each. The total would be 50 grams. Thus the total mass of the reactants also would need to be 50 grams, as no matter is lost in a chemical reaction.

Answer 2

The total mass of the reactants is 50 grams.

Given:

A chemical reaction produces two new substances, and each product has a mass of 25 grams.

To find:

The total mass of the reactants is 50 grams.

Solution

The mass of a single product = 25 g

The mass of another product = 25 g

The total mass of the products = P = 25 g + 25 g = 50 g

The total mass of reactants = R =?

According to the law of conservation of mass:

Total mass of reactants = Total mass of products

$P = 50 g\\\\P = R = 50 g$

The total mass of the reactants is 50 grams.

Learn more about the law of conservation of mass:

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