Respuesta :

Explanation:

Use this formula:

n=N/Na

Then

N=n*Na

N=5,09 mol *6*10²³molecules/mol

N= 30,54*10²³

If you are using other constant for Na then it is:

N=n*Na

N=5,09 mol *6,022*10²³molecules/mol

N=30,65 *10²³