Question

Number of atoms in 22g of CO2 is [ a ] 3 * 6.023 * 10^3 [ b ] 1.5 * 6.023 * 10^23 [ c ] 21.5 * 6.023 * 10^23 [ d ] 2.5 * 6.023 * 10^23

Answer 1

Answer:

no. of moles of CO2= 22/44=1/2

No. of atoms= 1/2*6.023*10^23

Answer 2

Answer:

b.1.5*6.022(10)²³.

Explanation:

1 mole of CO2=44g

22g of CO2 have 44/22 i.e., 1/2moles.

Number of atoms of Oxygen in 1/2moles, O2= 1/2(2)*6.022(10)²³.=6.022(10)²³.

Number of atoms of Carbon in 1/2moles, C=1/2*6.022(10)²³.=0.5*6.022(10)²³.

Total number of atoms in 1/2moles of CO2:

atoms of O2+atoms of C=

0.5*6.022(10)²³+6.022(10)²³(take common)

=6.022(10)²³(0.5+1)

=1.5*6.022(10)²³.