(a) A flask contains 3.2 g of sulphur dioxide. Calculate the following : (i) The moles of sulphur dioxide present in the flask. (ii) the number of molecules of sulphur dioxide present in the flask. (iii) the volume occupied by 3.2 g of sulphur dioxide at STP. (S = 32, O = 16) (b) A n experiment showed that in a lead chloride solution 6.21 g of lead is combined with 4.26 g of chlorine. What is the empirical formula of this chloride? (Pb = 2107; Cl = 35.5).

(a) A flask contains 3.2 g of sulphur dioxide. Calculate the followin

1.	(a) A flask contains 3.2 g of sulphur dioxide. Calculate the following : (i) The moles of sulphur dioxide present in the flask. (ii) the number of molecules of sulphur dioxide present in the flask. (iii) the volume occupied by 3.2 g of sulphur dioxide at STP. (S = 32, O = 16) (b) A n experiment showed that in a lead chloride solution 6.21 g of lead is combined with 4.26 g of chlorine. What is the empirical formula of this chloride? (Pb = 2107; Cl = 35.5).
Answer» (a) A flask contains 3.2 g of sulphur dioxide. Calculate the following : (i) The moles of sulphur dioxide present in the flask. (ii) the number of molecules of sulphur dioxide present in the flask. (iii) the volume occupied by 3.2 g of sulphur dioxide at STP. (S = 32, O = 16) (b) A n experiment showed that in a lead chloride solution 6.21 g of lead is combined with 4.26 g of chlorine. What is the empirical formula of this chloride? (Pb = 2107; Cl = 35.5).