In glycolysis of cellular respiration, the pyruvate amounts to c^3h^4o^3. the amount for carbon and oxygen make sense as there are two pyruvates and together they amount to 6 carbons and 6 oxygens (the amount glucose has), but the amount of hydrogens don't add up. there are 8 in total (from both pyruvates) and 2 going to nadph, but that amounts to 10 hydrogens, not 12. are the other two hydrogens used during glycolysis elsewhere? are they released in a different form? am i missing something?