Question

How many atoms are in 0.07 moles of lithium?

Answer 1

The number of atoms in 0.07 moles of lithium is 4.2161 x 10²² atoms.

Step-by-step explanation

Given:

Moles of lithium = 0.07 mol

What to find:

The number of atoms in 0.07 moles of lithium

Step-by-step solution:

From Avogadro,

1 mole of a substance contains 6.023 x 10²³ atoms.

So 0.07 mole of lithium will contains

`(0.07mol)/(1.0mol)*6.023*10^(23)\text{ }atom=4.2161*10^(22)\text{ }atoms`

The number of atoms in 0.07 moles of lithium is 4.2161 x 10²² atoms.