The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atom is:

Engineering

Chemistry

Estimation Percentage of Element

Mole and Its Calculation

Question

The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all ¹H atoms are replaced by ²H atom is:

7.5 kg

10 kg

15 kg

37.5 kg

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Gain in weight = $(\frac{75 \times 10}{100} \times (M_{H^{2}} - M_{H^{1}})) = 7 .5 kg$