The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists in recent years. It is believed that ozone can react with nitric oxide (NO) that is discharged from the high-altitude jet plane, the SST. The reaction is

O3 + NO ---> O2 + NO2
If 0.823 g of O3 reacts with 0.645 g of NO, Calculate the number of moles of the excess reagent remaining at the end of the reaction.