Question

11. Calculate the number of atoms in carbon monoxide (CO) of mass 56g?
(A) 24.09x1023
(B) 23.13x1024
(C) 24.09x10
(D) 23.13x10
W​

Answer 1

Answer - 28Na

Explanation: Firstly we will find molecular mass of CO, which will be - 28.

Now finding the no of neutrons in 1 molecule of CO,

So no of neutrons in carbon - ( mass no - atomic no) -6

And no of neutrons in oxygen -8

Now total neutrons _ 6+8- 14

Now no neutrons in 56g of CO - 56/28*Na *14- 28NA