Question

Determinati cantitatea de pulbere de aluminiu care se poate arde in 16,8L aer (20% O2)

Answer 1

VO2=1/5*Vaer = 1/5*16,8=3,36L O2

n=V/Vm=3,36/22,4=0,15 moli O2

4Al + 3O2 => 2Al2O3

4 moli Al............3 moli O2
x moli Al............0,15 moli O2

x=4*0,15/3 = Calculeaza !!