Question

. Which one of the following has maximum number of
atoms of oxygen ?
(Karnataka, C.E.T. 2007)
(a) 2 g of carbon dioxide
(b) 2 g of carbon monoxide
(c) 2 g of water
(d) 2 g of sulphur dioxide​

Answer 1

option c

Number of atoms present in 2g of H2O is = 6.023 × 1023/18 = 0.335 × 1023 × 2 = 0.67 × 1023 Number of atoms present in 2g of SO2 is = 6.023 × 1023/64