ok there are 500 mol of H2 in one kilogram of H2

I thought I figured that out already.. but maybe it is wrong

? This is what I did to get it:

(1 kg H2) * (1000 g H2/1 kg H2) * (1 mol H2/2 g H2)= 500 mol/kg

OK, I think I figured this out... (as long as 1 kg of H2 has 500 moles, that is)

I took the 500 mol H2/kg and multiplied it by the mole ratios. 1 mole of H2 per 1 mole of CO and then 1 mol of CO per 1 mol of CH4, giving me 500 mol of CH4. Next I took 500 mol of CH4 and converted it to kg which gave me 8 kg CH4, and hopefully that is it... :happy:

:happy: