Question

Q. 9. How Q. 10. Calculate the number of moles for the following
(ii) C2 12.144x10number of He atoms (finding mole from number of particles) ​

Answer 1

Answer:

For Helium,

Number of atoms=Number of moles ×6.022×10

23

No of Moles =

6.022×10

23

12.044×10

23

= 2.

Now, atomic mass of He=4

Weight = 2×4 = 8 g