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Per NCERT, what is the MASS PERCENTAGE of hydrogen in WATER (H₂O) — given molar masses C=12, H=1.008, O=16?
A50.00%
B11.18% (using 2 × 1.008 / 18.02 × 100)
C16.00%
D88.79%
Answer & Solution
Correct answer: B. 11.18% (using 2 × 1.008 / 18.02 × 100)
Per NCERT §1.9 example, %H in H₂O = (2 × 1.008 / 18.02) × 100 = 11.18%. The 88.79% is oxygen.
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