6
QuizMultiple Choice

Balancing Chemical Equations — Quiz

Question 6 • Physical Science

Kiley wants to balance the equation cap h sub 2 plus cap n sub 2 rightarrow NH sub 3 Which would be her first step in balancing an equation?

Answer
A
creating a chart that shows the number of atoms in the reactants and products
B
adding the coefficient 3 in front of cap h sub 2 and the coefficient 2 in front of NH sub 3
C
multiplying the subscripts in the atoms of the reactants together
D
changing the subscripts so they match for the total number of atoms

Explanation

First, count how many atoms of each element are on the reactant and product sides. A chart makes it easy to compare those counts before adding coefficients. The correct choice is creating a chart that shows the number of atoms in the reactants and products. Subscripts should not be changed when balancing an equation.

AI-written and checked against the verified answer.

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