Gnomebrewer
Well-Known Member
I came up with 22.3 moles of CO2 for a 20 L batch, with slightly different assumptions than yours. Both ways get a decent ballpark number.
So that's about 25 moles of CO2 for a 22L batch. +/- 20% of each other is close. A fair chunk of that would be taken up by me assuming a 1.010FG, when in reality it was probably more like 1.015. That's 10% of my calculation straight up.