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Kiley wants to balance the equation [tex]H_2 + N_2 \rightarrow NH_3[/tex]. Which would be her first step in balancing the equation?

A. multiplying the subscripts in the atoms of the reactants together
B. adding the coefficient 3 in front of [tex]H_2[/tex] and the coefficient 2 in front of [tex]NH_3[/tex]
C. changing the subscripts so they match for the total number of atoms
D. creating a chart that shows the number of atoms in the reactants and products

Sagot :

GinnyAnswer
To balance the chemical equation \( \text{H}_2 + \text{N}_2 \rightarrow \text{NH}_3 \), Kiley's first step should be creating a chart that shows the number of atoms in the reactants and products.

Here is a detailed, step-by-step approach:

### Step 1: Create a Chart
Creating a chart helps to visualize and track the number of atoms of each element on both sides of the equation. This is essential for ensuring that the law of conservation of mass is followed, meaning the number of atoms of each element must be the same on both sides.

### Unbalanced Equation:
[tex]\[ \text{H}_2 + \text{N}_2 \rightarrow \text{NH}_3 \][/tex]

#### Chart of Atoms:

| Element | Reactants | Products |
|:-------:|:---------:|:--------:|
| H | 2 | 3 |
| N | 2 | 1 |

### Explanation:
- Hydrogen (H): The reactants have 2 atoms of hydrogen from \( \text{H}_2 \). The products have 3 atoms of hydrogen from \( \text{NH}_3 \).
- Nitrogen (N): The reactants have 2 atoms of nitrogen from \( \text{N}_2 \). The products have 1 atom of nitrogen from \( \text{NH}_3 \).

### Conclusion:
The first step in balancing the equation is to create a chart that shows the number of atoms in the reactants and products. This allows Kiley to determine where adjustments need to be made in terms of coefficients to balance the equation.
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