Question

number of atoms in 52 a.m.u of helium ​

Answer 1

Explanation:

no.of mole=52/4=13

so,no.of atoms=13×6.022×10^23

Answer 2

Atomic mass of He = 4u

Given mass = 52u

No. of moles = Given mass/Atomic mass

                     = 52/4

                     =13 moles

No of atoms = Avogadro No * No of moles

                      6.022*10^23 * 13

                     = 78.286 * 10²³ atoms are present in 52 amu of He