Question

cat cântăresc 18,066×10²³ molecule de azotat de Fe(||)​

Answer 1

Răspuns:

Explicație:

1mol Fe(NO3)2 -------------------6,022.10²³molecule

xmoli-------------------------------------18,066.10²³molecule

x= 18,066 .10²³ : 6,022. 10²³ = 3moli Fe(NO3)2

m= n . M

M = 56 + 2.14 + 6.16= 180 --------> 180 g/moli

m= 3moli . 180 g/moli= 540 g Fe(NO3)2