Question

dean combines 34 grams of one chemical and an unknown amount of another chemical in a closed system. a chemical reaction occurs and the mass of the products is 116 grams. how much of the unknown chemical was used in the reaction?

Explanation:

Step1: Apply the law of conservation of mass

In a closed system, the mass of reactants equals the mass of products. Let the mass of the unknown chemical be \(x\) grams. The mass of reactants is \(34 + x\) grams, and the mass of products is \(116\) grams. So, \(34+x = 116\).

Step2: Solve for \(x\)

Subtract \(34\) from both sides of the equation: \(x=116 - 34\).

$$x = 82$$

Answer:

\(82\) grams