Дано
m(Cu;Mg)= 30 g
HCl
V(H2)= 1.12 л
W - ?
Cu + HCl ≠
Mg + 2HCl = MgCl2 + H2
x/24 = 1.12/22.4
x = 1.2 г
W(Mg)= 1.2/30 = 0.04 = 4%
W(Cu)= 100% - 4% = 96%
Дано
m(Cu;Mg)= 30 g
HCl
V(H2)= 1.12 л
W - ?
Cu + HCl ≠
Mg + 2HCl = MgCl2 + H2
x/24 = 1.12/22.4
x = 1.2 г
W(Mg)= 1.2/30 = 0.04 = 4%
W(Cu)= 100% - 4% = 96%