Answer:
GUUUUUUUUURLLLLLL HAVE CONFIDENCE YOU GO QUEEN PERIODT
Explanation:
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Hello!</h2>
The answer is: 11,2 moles of O2
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Why?</h2>
First, we need to balance the equation in order to calculate how many moles reacts,
The balanced equation is:

So, from the equation we have that 2 moles of C2H6 reacts with 7 moles of O2, knowing that we can calculate how many moles of O2 are required to react completely with 3.2 moles of C2H6:
So, we need 11,2 moles of O2 to react completely with 3,2 moles of C2H6.
Have a nice day!
I think it is the first choice
Hope that helped!
482VP I think is the correct answer.