Question

The number of molecules in 4 g of oxygen molecule is
1.6.022 x 10^23
2.7.528 x 10^22
3.1.201 x 10^22
4.2.446 x 10^20

Answer 1

Answer:

Given :

6.02×10

24

CO molecules

We know,

1 mole CO equivalent to 6.023×10

23

molecules of CO

6.023×10

23

molecules of CO contain 6.023×10

23

atoms of O

Then, 6.02×10

24

CO molecules contain 6.02×10

24

atoms of O

⇒ no. of gram atoms of O=

6.02×10

23

6.02×10

24

=10gm atoms ⟶1

As oxygen is a diatomic molecule.

No. of gm of molecules of oxygen=

2atoms/molecule

10gmatoms

=5gm molecules

Answer 2

Explanation:

2)7.528× 10^22 is the correct answer of the question.