What is the percent by mass of nitrogen in #NH_4NO_3#? Chemistry The Mole Concept Percent Composition 1 Answer P dilip_k Feb 27, 2016 molar mass of #NH_4NO_3=#2x14+4x1+3x16=80g/mole % of N in it = #28/80*100#=35 Answer link Related questions What is mole percent? Question #e2e8b Question #bc737 Question #bc73b Question #e2e8f Question #b9857 Question #b985b Question #fee41 Question #c5c01 Question #bc73f See all questions in Percent Composition Impact of this question 4237 views around the world You can reuse this answer Creative Commons License