What is the percent composition of H in H2O
The percent composition of hydrogen (H) in water (H2O) can be calculated as follows:
1. Determine the molar mass of H2O:
- Molar mass of 2 hydrogen atoms (H): 2 * 1.00784 g/mol = 2.01568 g/mol
- Molar mass of 1 oxygen atom (O): 15.999 g/mol
- Molar mass of H2O: 2.01568 g/mol + 15.999 g/mol = 18.01568 g/mol
2. Calculate the mass of hydrogen in H2O:
- Amount of H in H2O: 2 * 1.00784 g/mol = 2.01568 g/mol
3. Calculate the percent composition:
- Percent composition of hydrogen (H) in H2O: (Mass of H / Mass of H2O) * 100
- Percent composition of hydrogen (H) in H2O: (2.01568 g/mol / 18.01568 g/mol) * 100 ≈ 11.19%
Therefore, the percent composition of hydrogen in water (H2O) is approximately 11.19%.