Question

One atom of an element 'A' weight 8.3×10^-23 g. Calculate number of mole in 50 kg of it?

Answer 1

Hey.

Here is the answer.

weight of 1 atom = 6.644×10^-23 g

so, no. of atoms in 40 kg 

= 40×10^3 / 6.644×10^-23

= 6.02046 × 10^26 atoms

As, 1 gram atom = no. atoms in one mole = 6.02×10^23

so, no. of gram atom = 6.02046×10^26/6.02×10^23
=1000 gram atoms

Thanks.

Answer 2

Answer:

Explanation:

MOLES = GIVEN MASS / ATOMIC MASS

            =( 50×10^3 )g / 8.3×10^-23

             =(50× 10^3×10^23) /8.3

             =6.02×10^26 MOLES