the number of moles in 4.61*10^7 atoms of radon

Answer 1

To find the number of moles, we need to use Avogadro's number:

1 mole = 6.022 × 10²³ particles

So, first we need to convert the given number of atoms to moles:

4.61 × 10⁷ atoms × 1 mole/6.022 × 10²³ atoms = 7.666 × 10⁻¹⁶ moles

Therefore, there are approximately 7.666 × 10⁻¹⁶ moles in 4.61 × 10⁷ atoms of radon.