posted by Missy .
.0815 moles NO are reacted with .0789moles O2 gas to form NO2 gas according to the following equation: 2NO +O2=2NO2 determine the molar amounts of NO, O2 and NO2 after complete reaction.
This is a limiting reagent problem. Do you know how to determine which is the limiting reagent? Then you follow standard procedure for a stoichiometry problem.