2 moles N
2 moles H
3 moles O
Further explanation
Given
The compound is probably NH₂NO₃
Required
The number of moles
Solution
there are 2 N in NH₂NO₃, so moles N = 2moles
there are 2 H in NH₂NO₃, so moles H = 2moles
there are 3 O in NH₂NO₃, so moles O = 3 moles