I was reviewing chem equations online. This one site said this is a balanced equation. I don't see why there are 13 oxygens! thirteen times two would equal 26, and there aren't 26 oxygens on the other side. Who's correct and why? Thank you for your help. 4C2H5F+13O2=>8CO2+10H2O+2F2
Yes, there are 25 oxygen atoms on the right. There are 16 from 8 CO2 (8*2 = 16) + 10 more from the 10H2O which makes 16 + 10 = 26. So I would say the source of this info is correct. I believe the equation is balanced.
