Question

how many moles of o2 are required to obtained 10 moles of h2o by reacting with h2.

Answer 1

according to the reaction

O2 + 2H2 --> 2H2O

We can see that 1 mole of O2 gives 2 moles of H2O

Hence 5 moles of O2 would be required to produce 10 moles of H2O

Answer 2

Answer:

5 moles of O₂ are required to obtained 10 moles of H₂O   

Explanation:

Balanced equation : 2H₂ + O₂ → 2H₂O  

From the equation , we observe that

• 2 moles of H₂O  is obtained from 1 mole of O₂

• 1 mole of H₂O  is obtained from 1/2 mole of O₂

• 10 moles of H₂O  is obtained from 10×(1/2) mole of O₂= 5 moles of O₂

• 5 moles of O₂ is required to produce 10 moles of H₂O

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