Question

Calculate
the
number
of
atoms
in
each
of
the
following


(a)52
g
of
He.


(b)
52
u
of
He​

Answer 1

Answer:

(i) 52 u of He will contain 52/4 = 13atoms

(ii) 52g of He will contain 52/4 x 6.022 x 10^23 = 7.82 x 10^24 atoms