posted by Jack .
Write the 12 mole ratios that can be derived from the equations for the combustion of isopropyl alcohol.
2 C3H7OH(l) + 9 O2(g) ==> 6 CO2(g) + 8 H2O (g)
I'll do one but not 12. Actually, there are six and the reversal of the six to make twelve.
2 moles C3H7OH/9 moles O2 and the reverse (perhaps I should have said reciprocal) of that is
9 moles O2/2 moles C3H7OH.