What is the percent hydrogen in water?
Question
What is the percent hydrogen in water?
Solution
Sure, here's how you can calculate the percent of hydrogen in water (H2O):
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First, you need to know the atomic masses of hydrogen and oxygen. The atomic mass of hydrogen is approximately 1 gram/mole and oxygen is approximately 16 grams/mole.
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Water has two hydrogen atoms and one oxygen atom, so its total molar mass is (2*1) + 16 = 18 grams/mole.
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To find the percentage of hydrogen, you divide the total mass of hydrogen by the total mass of the molecule and multiply by 100. So, (2/18)*100 = 11.11%.
So, the percent of hydrogen in water is approximately 11.11%.
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A sample of pure water irrespective of its source contains 88.89% oxygen and 11.11% hydrogen by mass.The data supports:Law of conservation of massLaw of constant compositionDalton’s atomic theoryAvogadro’s law
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