a) Molarity = moles/volume moles= molarityxvolume moles= 15.8Mx (5.2ml/1000)=0.08216mol HNO3 in excess What are the other reactions in your experiment? Solution a) Molarity = moles/volume moles= molarityxvolume moles= 15.8Mx (5.2ml/1000)=0.08216mol HNO3 in excess What are the other reactions in your experiment?.