The number of atoms = 4.8 x 10²² atoms
Further explanation
Given
5.9 g of Lithium carbonate
Required
The number of atoms
Solution
mol Lithium carbonate(MW=73.9 g/mol) :
= mass : MW
= 5.9 g : 73.9 g/mol
= 0.08
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
So for 0.08 mol :
= 0.08 x 6.02.10²³
= 4.8 x 10²² atoms