Уровнения: 1)H2SO4+Zn=
2)HCl+MgCO3=
3)KOH+CuCl2=
4)NaOH+SO3=
5)HCl+NaOH=
6)AgNO3+HCl=
преврашения:
P⇒P2O5⇒H3PO4⇒Mg3(PO4)2
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