Question

cuantos átomos de zinc hay en 250 gramos ? paso a paso

Answer 1

1. buscar la Mm del zinc

Mm = 65.39 g/mol

2. calcular moles aplicando la fórmula n = masa/Mm

n = 250 g / 65.39 g/mol

n = 3.823 moles

3. calcular moles con el número de avogadro

       1 mol ------ 6.022 x 10²³ átomos Zn
3.823 mol ------             x

      x = 3.823 mol  x  6.022 x 10²³ átomos
           ``````````````````````````````````````````````
                           1 mol

        x = 2.302 x 10²⁴ átomos Zn