Login or Sign Up
Menu
Ask a New Question

Use the chemical equation to complete the activity.

2Cu + S -> C*u_{2}*S

Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction. In this reaction, all of the copper and all of the sulfur react. Before running the experiment, the scientist expected the products of the reaction will be a total of 15.9 grams of copper sulfide (C*u_{2}*S) ? In 1 - 2 sentences, explain the law that the scientist used to predict that the product of the reaction would be 15.9 grams of copper sulfide.

(2 points)

The scientist used the law of conservation of mass to predict that the product of the reaction would be 15.9 grams of copper sulfide. This law states that the mass of the reactants must be equal to the mass of the products in a chemical reaction.

The scientist used the Law of Conservation of Mass to predict that the product of the reaction would be 15.9 grams of copper sulfide. According to this law, the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.

The scientist used the law of conservation of mass to predict that the product of the reaction would be 15.9 grams of copper sulfide. This law states that in a chemical reaction, the mass of the reactants must equal the mass of the products. Therefore, if all of the copper and sulfur react, the mass of the products should be equal to the combined mass of the reactants.