Question

2. Naturally occurring chlorine is 75 % C135 and 25 % C137. Calculate the
average atomic mass of chlorine-
(A) 35.5 amu
(B) 36.5 amu
(C) 71 amu
(D) 72 amu​

Answer 1

Answer:

Average atomic mass is given by:

M

av

=

0.75+0.25

35×0.75+37×0.25

=35.5 gm/mol