Question #edc96 Chemistry The Mole Concept Percent Composition 1 Answer Michael Jul 1, 2015 #0.14"g"# Explanation: The number of moles #O=0.08/A_r=0.08/16=0.005# Since the formula is #N_2O# the number of moles of #N=0.005xx2=0.01# The #A_r# of #N=14#. So mass #N=14xx0.01=0.14"g"# (Approx #A_r# values used). 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 1573 views around the world You can reuse this answer Creative Commons License