Question

number of atoms in 24 g 02​

Answer 1

Answer:

0.75 * 6.022* 10^23

Explanation:

As we know

To find the number of atoms / molecules we need to find the number of moles first.

Number of moles = Given Mass / Molar Mass of Atomic mass --------(1)

So the molar mass of O = 16

hence the molar mass of O2 = 16*2= 32

Applying this in (1)

We get,

Number of moles= 24/32

                            =0.75

So therefore the number of atoms of O2

= Number of moles * Avagadros number

= 0.75 * 6.022* 10^23

Hope this helps...