Answers Physical Science PretestQuestion 3

3

lesson pretestMultiple Choice

Pretest

Question 3 • 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

multiplying the subscripts in the atoms of the reactants together

B

adding the coefficient 3 in front of cap h sub 2 and the coefficient 2 in front of NH sub 3

C

creating a chart that shows the number of atoms in the reactants and products

D

changing the subscripts so they match for the total number of atoms

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