Question

calculate the number of atoms in 9.2g of sodium

Answer 1

Here's ur Answer Mate!

Molar Mass of Na = 23g/mol

9.2 g => 9.2/23

= > 0.4 mol Na

1 mol of sodium has 6.022×10^23atoms

0.4 mol of sodium = 0.4×6.022×10^23 atoms

=2.4×10^23 atoms

Stay Cool

Answer 2

Explanation:

molecular mass of Na: 23 g/ mol

No. of. GAM : 9.2÷ 23

= 0.4 mol

No. of atoms in 1 mol Na: 6.022× 10^23

Therefore No. of atoms in 0.4 mol: 0.4×6.022×10^23

=0.4 avagadro's number

OR

= 2.4×10^23