Question

Calculate the no of atoms in 2.5 moles of mg

Answer 1

No. of mole=2.5
Molar mass of Mg=24 g
Mass=Molar mass× No. of mole
= 24×2.5
= 60 g
Now,
No. of atoms=Mass÷Molar mass×Avogadro's no.
=60÷24×6.022×10^23
=1.5055×10^23

Answer 2

Answer:

No. of mole=2.5

Molar mass of Mg=24 g

Mass=Molar mass× No. of mole

= 24×2.5

= 60 g

Now,

No. of atoms=Mass÷Molar mass×Avogadro's no.

=60÷24×6.022×10^23

=1.5055×10^23