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Bogdan [553]
3 years ago
14

water is 2 parts of hydrogen and 1 part oxygen. for one molecule of water each atom has the atomic mass unit, u,shown. what perc

ent o the mass of a water molecule is hydrogen
Chemistry
2 answers:
fomenos3 years ago
5 0

Answer:

11.19 %

Explanation:

1 molecule water = 2 H + 1 O

If H = 1.008 u and O = 16.00 u, then

Water = 2H + 1 O = (2 × 1.008 u) + (1 × 16.00 u) = 2.016 u + 16.00 u = 18.02 u

The formula for mass percent is

\% \text{ by mass} = \frac{\text{Mass of H}}{\text{Total mass}} \times 100 \%

So,

\%\text{ H} = \frac{\text{2.016 u}}{\text{18.02 u}} \times 100 \% = 11.19 \%

elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

11.19

Explanation:

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