Question

18,069×10²³ Molecule de sulfat de Aluminiu se cere:
a.Moli

b.Grame ​

Answer 1

Răspuns:

a) n = (nr. de molecule) : nr. Avogadro = 18,069 × 10^23 : 6,022 × 10^23 = 3 moli

b) M Al2(SO4)3 = 342 g/mol

n = 3

m = n × M => m = 342 g/mol × 3 moli = 1026 g = 1,026 kg