One mole of oxygen gas at STP is equal to...........
(a) 6.022×1023 molecules of oxygen
(b) 6.022×1023 atoms of oxygen
(c) 16 g of oxygen
(d) 32 g of oxygen
(d)
1 mole of O2 gas at STP = 6.022×1023 molecules of O2 (Avogadro number) = 32 g of O2
Hence, 1 mole of oxygen gas is equal to molecular weight of oxygen as well as Avogadro number.