How many nitrogen atoms are in a 2.51 mol sample of N_2O? Chemistry Matter Everything is Made of Atoms 1 Answer anor277 Aug 28, 2016 #5.02xxN_A#, where #N_A="Avogadro's number"# Explanation: #N_A=6.022xx10^23*mol^-1# Clearly there are #5.02xxN_A# nitrogen atoms in a #2.51*mol# sample. How many oxygen atoms? Answer link Related questions How do atoms become ions? Can atoms be subdivided? What molecules are diatomic? What atoms are found in carbohydrates? What is a neutral atom? What are atoms? Do atoms have color? Question #0b943 What is an atom? Is there a difference between a molecule and an atom? See all questions in Everything is Made of Atoms Impact of this question 3276 views around the world You can reuse this answer Creative Commons License