What should be the weight of carbon monoxide to have the same number of oxygen atoms as in 22 g of carbon dioxide?

C + O₂ → CO₂

Molar mass of CO₂= 44

So, 22 g of CO₂ is 0.5 mole.

1 mole of O₂ is used to form 1 mole of CO_2.

∴ 0.5 mole of CO₂ will have 0.5 mole of O₂= 0.5 * 6.022 * 10²³

  = 3.011 * 6.022 * 10²³

C + ½ O₂ → CO

So, 0.5 mole O₂ is used to form 1 mole of CO.

1 mole of CO= 28 g.

∴ x/ 28 = 0.5

x= 14 g.

Thus, 14 gm CO will have same number of oxygen atoms as 22 g of CO_2.