Question

Cati atomi se gasesc in 1/2 moli de sodiu, 1/5 moli de sulf, si 2/3 moli de oxigen ?

Answer 1

1 mol de sodiu.......6.023*10^23 atomi
1/2.......................x
x=0.5*6.023*10^23=3.0115*10^24 atomi
1 mol de sulf............6.023*10^23 atomi
1/5moli.........................y
y=0.2*6.023*10^23=1.2046*10^23 atomi
1 mol oxigen................6.023*10^23 atomi
2/3 moli oxigen ...........z
z=0.66*6.023*10^23=4.015*10^23 atomi