NEET Chemistry Percentage Composition MCQ Question
Calculate the percentage composition of oxygen in carbon dioxide (CO2) given that the molar mass of carbon is 12.01 g/mol and oxygen is 16.00 g/mol.
72.73%
66.67%
44.44%
27.27%
Correct Answer
Detailed Explanation
The molar mass of CO2 is 44.01 g/mol (12.01 g/mol for carbon + 2 * 16.00 g/mol for oxygen). The mass percentage of oxygen is calculated as (32.00 g/mol / 44.01 g/mol) * 100 = 72.73%.
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