Question

Se ard 540 g de aluminiu. Calculati cate grame de oxid de aluminiu se obtin. URGENTTTT DAU COROANE

Answer 1

Răspuns:

$4~Al~+~3~O_2\rightarrow 2~Al_2O_3 \\ \\ \frac{540}{27}=20~mol~Al \\ \\ \frac{20}{4}\times 2=10~mol~Al_2O_3 \\ \\ \mu _{Al_2O_3}=2\times 27+3\times 16=102~g/mol \\ \\ 10\times 102=1020~g=1.02~kg$