QUESTION IMAGE
Question
an electric current can be used to decompose water (h₂o) into oxygen (o₂) and hydrogen (h₂). this reaction is represented by the balanced chemical equation below. 2h₂o (l) → 2h₂ (g) + o₂ (g) determine the number of each type of atom in the reactants and products. number of atoms in reactants number of atoms in products h o
Step1: Calculate atoms in reactants
For \( H \): Coefficient \( 2 \) in \( 2H_2O \), each \( H_2O \) has \( 2 \) \( H \) atoms. So \( 2\times2 = 4 \).
For \( O \): Coefficient \( 2 \) in \( 2H_2O \), each \( H_2O \) has \( 1 \) \( O \) atom. So \( 2\times1 = 2 \).
Step2: Calculate atoms in products
For \( H \): Coefficient \( 2 \) in \( 2H_2 \), each \( H_2 \) has \( 2 \) \( H \) atoms. So \( 2\times2 = 4 \).
For \( O \): Coefficient \( 1 \) in \( O_2 \), each \( O_2 \) has \( 2 \) \( O \) atoms. So \( 1\times2 = 2 \).
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| Number of atoms in reactants | Number of atoms in products | |
|---|---|---|
| \( O \) | \( 2 \) | \( 2 \) |