16. The number of atoms present in 0.5 g atoms of nitrogen is same as the (a) 12 g of C (b) 32 g of S (c) 8 g of oxygen (d) 24 7. Which of the following contains particles equal to those in 12 g Mg? (At. wt. Mg (a) 12 gm carbon (b) 7 gm nitrogen (C) 32 gm oxygen (d) 24