Respuesta :

Awste
n=N/Na;
N=n×Na


[tex]N = 2.10 \times 6.02 \times {10}^{23} = 1.2642 \times {10}^{23} \: atoms[/tex]

[tex]N(N2) = 2 \times 1.2642 \times {10}^{23} = 2.5284 \times {10}^{24} molecules[/tex]
answer: a