задачи помогите решить))) дано: 1)m(Mg)=1.2г V(H2)=? 2)дано: m(HCl)р-ра=730г w(HCl)=5% m(Mg)-?
m(Mg)=1.2г
V(H2)=
Mr (h2)=2
Mg+H2O=MgO+H2
24 2
1.2 X
X=1.2*2/24=0.1
V(H2)=0.1/2=0.05
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m(Mg)=1.2г
V(H2)=
Mr (h2)=2
Mg+H2O=MgO+H2
24 2
1.2 X
X=1.2*2/24=0.1
V(H2)=0.1/2=0.05