Выбери вещества, с помощью которых можно осуществить превращения:

1. Ca(OH)2→CaSO3

SO2
K2SO3
SO3
H2SO3
Li2SO4

2. Mg(OH)2→Mg3(PO4)2

H3PO4
Ag3PO4
K3PO4
P2O5
P2O3
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