State which has higher number of moles : 5 g. of N2O or 5 g. of NO [N = 14, O = 16]

Gram molecular mass of N₂O

= (2 × 14) + 16

= 44 g

44 g of N₂O = 1 mole

∴ 5 g of N₂O = 1\over 44 × 5

$=0.11$ moles

Gram molecular mass of NO

= 14 + 16

= 30 g

30 g of NO = 1 mole

∴ 5 g of NO = 1\over 30 × 5

$=0.16$ moles

Hence, 5 g. of NO has higher moles than 5 g. of N₂O