Question

The atomic mass of potassium is 39. Calculate the number of moles in 78 g of potassium.​

Answer 1

Answer:

As we know, one mole of each substance contains N

A

=6.023×10

23

atoms.

Here, moles of K =

39

117

=3

∴ atoms of K =3N

A

=3×6.023×10

23

Answer 2

Answer:

23 is the answer of your question.