sorry with the spam of questions
this ones regarding glycolysis
so 1 glucose molecule goes in (has 12 hydrogens) and 2 pyruvates come out (each has 3 hydrogens, so 3x2=6 hydrogens in total)
correct me if I'm wrong, but then 4 hydrogens are used to convert NAD+ into NADH (2 hydrogens for each), as each NAD+ molecules requires one hydrogen and two electrons to form NADH (therefore two hydrogens used up for each)
so 6+4=10 hydrogens used up so far, but since glucose had 12 hydrogens, where does the remaining two go?
I asked previously whether water was an output, and this would explain the remaining two leaving, but then where does the oxygen come from as the two pyruvate molecules use all of the glucose molecule's water.
plz help