Question

Calculate number of moles and molecules present in 8.8g of carbon dioxide and also calculate no. of oxygen atoms present in this.


please solve this question.​

Answer 1

44g. =1.2* 10^22 molecules. =2.4 * 10^22 atoms

Answer 2

Mass of 1 Mol of CO2 = 12+2*32

= 12+32g

= 44g.

Then no. of Mol of CO2 in 8.8 g

= 8.8/44 * 6.023*10²³ molecules

= 1.2 * 10²² molecules.

So number of moles of oxygen atoms

= 2*1.2*10²² atoms

= 2.4 * 10²² atoms.

Númber Of moles of Oxygen = 2.4*10²²/ 6.023*10²³ = 2.4/60

= 0.04 mol