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Sagot :
Moles O2 required : 2.5
Further explanation
Given
Reaction
2H2+O2->2H2O
Required
Moles of O2
Solution
The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants or products)
From the equation, mol ratio of H2O : O2 = 2 : 1, so moles O2 :
= 1/2 x mol H2O
= 1/2 x 5 moles
= 2.5 moles
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