M(эквивалента )= 310/3*2=51.67
<span>1)H2SO4+2KOH=K2SO4 +2H2O</span>
<span>2)H2SO4+Mg=MgSO4+H2</span>
<span>3)<span>Ag2O + H2SO4 = Ag2SO4 + H2O</span></span>
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