Question

What is the number of molecules of CO2 which contain 8 g of O2 ?​

Answer 1

Answer:

Explanation:

1 mole CO2 contains = 32g O2

X mole CO2 contains = X*32g O2........

So X*32g = 8g

X = 8/32 = 1/4 mole CO2 molecule.......

= 1/4 * (6.022*10^-23) molecules of CO2

~~ ANSWER BY A JEE ASPIRANT.......

Answer 2

weight of CO2=44 gm

44 gm of CO2 has 32 gm Oxygen

therefore x gm CO2 has 8 g oxygen

x=44*8/32

=11 gm

now the second step

44 gm CO2 has Na particles

Na=6.022*10^23

therefore 11 gm CO2 has y particles

y=11*Na/44

=6.022*10^23/4

=1.5*10^23 particles

(btw thanks for asking the same question again cause i got free points XD )