Răspuns :
Mg+O2=MgO
Mg=120g MgO=x
m(Mg)=24g m(relativ)(MgO)=40g
120 = x =>x=200g m(MgO)=200g
24 40
Mg=120g MgO=x
m(Mg)=24g m(relativ)(MgO)=40g
120 = x =>x=200g m(MgO)=200g
24 40