Question

Calculate the mass of 3.011*(10)24 atoms of carbon.

Answer 1

Concept : Mole concept

We know,
6.023 x 1023 atoms = 1 mole of an elements
3.011 x 10²⁴ atoms= 3.011 x 10²⁴ /6.023 x 10²³ = 5 moles
Secondly,
1 mole of Carbon atoms = atomic mass of carbon atom = 12 g
5 mole Carbon atoms = 12 x 5 =60g