Multiple Choice
Which chemical symbols will complete the equation for the decomposition reaction: 2H_2O_2 → ___ + ___?
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3. Chemical Reactions
Balancing Chemical Equations
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Which of the following lists the reactants in the chemical equation: 3Mg(s) + 2FeCl_3(aq) → 2Fe(s) + 3MgCl_2(aq)?
A
Mg(s) and FeCl_3(aq)
B
Fe(s) and MgCl_2(aq)
C
FeCl_3(aq) and Fe(s)
D
Mg(s) and MgCl_2(aq)
Verified step by step guidance1
Identify the chemical equation given: \$3Mg(s) + 2FeCl_3(aq) \rightarrow 2Fe(s) + 3MgCl_2(aq)$.
Recall that reactants are the substances present before the reaction takes place, located on the left side of the arrow.
Look at the left side of the equation to find the reactants: \$3Mg(s)\( and \)2FeCl_3(aq)$.
Recognize that the right side of the equation shows the products formed after the reaction, which are \$2Fe(s)\( and \)3MgCl_2(aq)$.
Conclude that the correct list of reactants is \(Mg(s)\) and \(FeCl_3(aq)\).
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