NEET Chemistry Percentage Composition MCQ Question
A diagram shows a molecule consisting of two hydrogen atoms and one oxygen atom. Which term correctly describes the percentage composition of this molecule?
Hydrogen makes up approximately 11% by mass.
Oxygen makes up approximately 67% by mass.
Hydrogen makes up approximately 33% by mass.
Oxygen makes up approximately 89% by mass.
Correct Answer
Detailed Explanation
In a water molecule (H2O), hydrogen contributes approximately 11% of the total mass due to its lower atomic mass compared to oxygen.
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