Question

In the table given below, write the number of molecules and the
total number of atoms.
Substance Number of molecules Total number of atoms
02
2N
6C1,
2He
5Na
03
PA
4​

Answer 1

Answer:

(i) The number of atoms present in 52 mol of Ar are 52×6.023×10

23

=3.13×10

25

atoms.

(ii) 52 u of He will contain

4

52

=13 atoms.

(iii) 52 g of He will contain

4

52

×6.023×10

23

=7.82×10

24

atoms.