2012注化专业案例上午第4题? h2o mol数 = 500x18% /22.4 x 10^3 = 4017.9mol, then m(h2o) = 4017.9 x 18 = 72.3 kg. n2 mol数 = 500x42%/22.4 x 10^3 = 9375mol, then m(air) = 9375/(1-79%) x 29 = 344.1kg. o2 mol数 = 9375/(1-79%) x 21% = 2492.1mol. then m (c) = (4017.9 + 2 x 2492.1) x 12 = 108.0 kg. b, 很容易吧? 查看更多