Explanation:

Molar mass of CO

2

= 44; Molar mass of CO = 28

No. of CO

2

present in 8.8g =

44

8.8

=0.2moles

0.2 moles of CO

2

contain = 0.2×(6.023×10

23

)=1.2×10

23

molecules

∴ no. of moles of oxygen atoms in CO

2

=

6.023×10

23

2×(1.2×10

23

)

=0.4

As the no of Oxygen atoms present in CO is same as that of oxygen atoms present in 8.8g of CO

2

0.4=

28

wt

=11.2gm

∴ the no. of Oxygen atoms in CO = 0.4moles in 11.2gm of C

Explanation:

Answer. =44g. =1.2* 10^22 molecules.