Question

i).Calculate the number of moles for the following:-

a).64g of oxygen atoms.

b).12.044 X 1023 number of He atoms.​

Answer 1

Answer:

a) 4

b) 2

Explanation:

a) n= m/M

= 64/16

= 4

b) n= no. of particles

avogadro's no.

= 12.044x 10²³/6.022x 10²³

= 2