NEET Chemistry Percentage Composition MCQ Question
Calculate the percentage composition of oxygen in water (H₂O) given that the molar mass of hydrogen is approximately 1 g/mol and oxygen is 16 g/mol.
88.89%
11.11%
50.00%
33.33%
Correct Answer
Detailed Explanation
The molar mass of water is 18 g/mol (2 g/mol for hydrogen + 16 g/mol for oxygen). The percentage composition of oxygen is (16/18) × 100% = 88.89%.
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