Hey, I had a problem with the following question from a Kaplan simulated exam. Maybe somebody would be able to help me out: given HNO3 --> HNO2 --> H2N2O2 --> N2O(g) --> N2 (g) If all the oxygen in the nitric acid is converted to water, how many additional equivalents of acid will be consumed during the production of 5M of nitrogen? a) 20 b) 30 c) 40 d) 50 i've been stratching my head with this one, but can't seem to figure it out. I havent taken a look at kaplan's explanation yet. any takers??