• # question_answer 60)   One mole of oxygen gas at STP is equal to: (a) $6.022\times {{10}^{23}}$ molecules of oxygen (b) $6.022\times {{10}^{23}}$ atoms of oxygen (c) 16 g of oxygen (d) 32 g of oxygen

(a, d)  1 mol of ${{O}_{2}}$ gas at STP will contain $6.022\times {{10}^{23}}$molecules and its mass will be 32 g.