Question

A flask contains 3.2 g of sulphur dioxide. Calculate the followings:

i) The number of molecules of sulphur dioxide at STP.

ii) The volume occupied by 3.2 g of sulphur dioxide at STP.

(S = 32, O = 16)

• A. 2.73 x 10²¹ molecules, 1.21 litres
• B. 3.01 x 10²² molecules, 1.12 litres
• C. 2.73 x 10²¹ molecules, 1.25 litres
• D. 3.01 x 10²² molecules, 1.25 litres
• E. 2.73 x 10²² molecules, 1.12 litres

Answer 1

The correct option is B

3.01 x 10²² molecules, 1.12 litres