if the atomic weight of oxygen were taken as hundred then what would be the molecular weight of water
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HOMEWORK HELP > CHEMISTRY
Suppose you want to make 100 grams of water. How much hydrogen and Oxygen would you need to make 100 grams of water with nothing left over. Explain.
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JUSTAGUIDE eNotes educator| CERTIFIED EDUCATOR
The chemical formula of water is H2O. One molecule of water has 2 atoms of hydrogen and one atom of oxygen.
1 mole of water requires 1 mole of hydrogen (H2) and 0.5 moles of oxygen (O2).
The molar mass of water is 100/18
This requires 100/18 moles of hydrogen. As the molar mass of hydrogen is 2, it requires 200/18 = 100/9 g of hydrogen.
It requires 0.5*100/18 mole of oxygen. The molar mass of oxygen is 32. The mass of oxygen required is 800/9 g
It requires 100/9 g of hydrogen gas and 800/9 g of oxygen gas to make 100 g of water.
Answer:
112.5
Explanation:
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