Осуществи превращения. 1) MgO -> MgSO4 ->MgCl2 -> Mg(NO3)2 -> Mg(OH)2 ->MgO 2) CaCl2 ->Ca ->Ca(OH)2 ->CaCl2 ->Ca(NO3)2 ->CaSO4 3) Cu ->Cu(NO3)2 -> Cu(OH)2 ->CuSO4 ->Al2(SO4)3 ->AlCl3

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вопрос

1) Magnesium oxide (MgO) can be transformed into magnesium sulfate (MgSO4), then into magnesium chloride (MgCl2), followed by magnesium nitrate (Mg(NO3)2), then magnesium hydroxide (Mg(OH)2), and finally back to magnesium oxide (MgO).

2) Calcium chloride (CaCl2) can be converted into calcium metal (Ca), which can then react to form calcium hydroxide (Ca(OH)2). The calcium hydroxide can be reacted with calcium chloride (CaCl2) to form calcium nitrate (Ca(NO3)2), then calcium sulfate (CaSO4).

3) Copper (Cu) can be transformed into copper nitrate (Cu(NO3)2), then copper hydroxide (Cu(OH)2), followed by copper sulfate (CuSO4). Further reactions can result in aluminum sulfate (Al2(SO4)3) and aluminum chloride (AlCl3).