If I have a 10 bar single acting ram 80mm bore 100 mm stroke then each flip will use around 40cm^3 of co2. If i use a 16oz bottle of co2 how many flips do I theoretically get?

Also if it is single acting Woodies use of qev's has no use does it? I may not have got the right idea because I think I read that you could use them a inlet valves instead of outlet but what I read had them as outlet on a double acting cylinder