Question

the __ step in balancing a chemical equation is to take inventory or count atoms on the reactant and the product side. a first b second c last the number 3 next to hydrogen in nh₃ is the __. a coefficient b numerator c subscript how many atoms of hydrogen in the product side of the balanced equation? fe + h₂o → feo + h₂

Explanation:

1. The first step in balancing a chemical equation is to count the atoms on the reactant and product sides. This helps in identifying the number of each type of atom present initially.
2. In a chemical formula like $NH_3$, the number 3 next to hydrogen is a subscript. A subscript indicates the number of atoms of the element it follows in the molecule.
3. For the equation $Fe + H_2O

ightarrow FeO + H_2$, on the product side, in $H_2$, there are 2 atoms of hydrogen.

Answer:

1. A. first
2. C. subscript
3. 2