Mg+2HCl=MgCl2+H2
1 1
n(H2)=18,7:22,4=0,835моль; n(Mg)=0,835моль;m(Mg)=0,835x24=20г;
W(Mg)=20г:25г=0,8(80%).
Mg+2HCl=MgCl2+H2
1 1
n(H2)=18,7:22,4=0,835моль; n(Mg)=0,835моль;m(Mg)=0,835x24=20г;
W(Mg)=20г:25г=0,8(80%).