Question
What is the mass percentage of hydrogen in the H2O molecule?
Answer: Option B
:
B
Let us consider 1 molecule of H2O
Mass of hydrogen in 1 molecule of H2O= 2g
Mass of oxygen in 1 molecule of H2O = 16g
Therefore, total mass of 1 molecule of H2O = 2+16 = 18g
Now percentage of hydrogen is given by:
=Mass of hydrogen in 1 molecule ofH2OTotal mass of 1 molecule ofH2O
=218×100=11.11%
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:
B
Let us consider 1 molecule of H2O
Mass of hydrogen in 1 molecule of H2O= 2g
Mass of oxygen in 1 molecule of H2O = 16g
Therefore, total mass of 1 molecule of H2O = 2+16 = 18g
Now percentage of hydrogen is given by:
=Mass of hydrogen in 1 molecule ofH2OTotal mass of 1 molecule ofH2O
=218×100=11.11%
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