Question

what is the mass of chlorine used during the reaction?
chlorine + potassium → potassium chloride
? 18.34 g 34.97 g
give your answer to the correct number of
significant figures.
mass of chlorine (g)

Explanation:

Step1: Apply the law of conservation of mass

According to the law of conservation of mass, in a chemical reaction, the total mass of reactants is equal to the total mass of products. Let the mass of chlorine be \(m\). The reactants are chlorine (\(m\)) and potassium (\(18.34\space g\)), and the product is potassium chloride (\(34.97\space g\)). So, we have the equation \(m + 18.34=34.97\).

Step2: Solve for \(m\)

Rearrange the equation to solve for \(m\): \(m=34.97 - 18.34\).

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Answer:

\(16.63\space g\)