Question

calculate no. of atoms in 24g of he​

Answer 1

Answer:

1. 1 mole of He contains 6.023×10^23 atoms
2. mole of He = 4 gm of He. So, 20 gm of He contains — (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.

Answer 2

Answer:

Explanation:

1 mole of He contains  

1 mole of He = 4 gm of He

So, 20 gm of He contains =   (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.