how many moles of oxygen are consumed in burning 1.6 moles of benzene, C6H6?
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12.0
To determine the number of moles of oxygen consumed in burning 1.6 moles of benzene (C6H6), we need to examine the balanced chemical equation for the combustion of benzene.
The balanced equation for the combustion of benzene is:
C6H6 + (15/2)O2 → 6CO2 + 3H2O
From the equation, we can see that 1 mole of benzene reacts with (15/2) moles of oxygen to produce 6 moles of carbon dioxide (CO2) and 3 moles of water (H2O).
Therefore, to find out how many moles of oxygen are consumed, we will set up a ratio using the coefficients in the balanced equation:
(1.6 moles of benzene) x (15/2 moles of O2) / (1 mole of C6H6)
Now, let's calculate:
(1.6) x (15/2) / (1) = 12 moles
Therefore, 12 moles of oxygen are consumed in burning 1.6 moles of benzene.
6moles
Start with the equation in words
benzene + oxygen -> carbon dioxide + water
then add the molecular formulae
C6H6 + O2 -> CO2 + H2O
next balance the equation