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2H₂ + O2 → 2H₂O
If you have 3.31 moles of hydrogen how many grams of oxygen are needed?

User Frederik Heyninck
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1 Answer

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In the chemical reaction 2H₂ + O2 → 2H₂O, two moles of hydrogen react with one mole of oxygen to produce two moles of water. If you have 3.31 moles of hydrogen, you need 3.31/2 = 1.655 moles of oxygen to react with it.

To find the number of grams of oxygen needed, we can use the molar mass of oxygen, which is 16 grams/mole. The number of grams of oxygen needed is given by the formula:

grams of oxygen = moles of oxygen * molar mass of oxygen

Substituting the values and solving, we find that:

grams of oxygen = 1.655 moles * 16 grams/mole

= 26.88 grams

Therefore, you need 26.88 grams of oxygen to react with 3.31 moles of hydrogen in the given chemical reaction.

User Nathan Ryan
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