А)Физические
б)Химические
в)Физические
г)Химические
7.
2Mg+O2=2MgO
Mg+2HCl=MgCl2+H2
MgCl2+Na2CO3=2NaCl+MgCO3
MgCO3=CO2+MgO
9.
CaH2+2CaO=2Ca+Ca(OH)2
2Ca+O2=2CaO
Ca+2HCl=CaCl2+H2
3CaCl2+2Na3PO4=Ca3(PO4)2+6NaCl
11.
CaCO3=CO2+CaO
CaO+CO2=CaCO3
CaCO3+2HCl=CaCl2+CO2+H2O
CaCl2+2H2O=Ca(OH)2+H2+Cl2 - электролиз
13.
MgO+H2SO4=MgSO4+H2O
MgSO4+BaCO3=BaSO4+MgCO3
2Mg+O2=2MgO
Mg+Br2=MgBr2
Масса сахара равна 300г*0,25=75г
значит масса воды равна 300г-75г=225г
<span>1. 3NaOH + H</span>₃<span>PO</span>₄= Na₃PO₄ + 3H₂O
<span>
2.MgO +H</span>₂<span>SO</span>₄=MgSO₄ + H₂O
<span>
3.H</span>₂<span>SO</span>₄ + 2<span>NaOH = Na</span>₂SO₄ + 2H₂O
<span>
4.Al</span>₂<span>S</span>₃+6<span>HNO</span>₃= 2AI(NO₃)₃ + 3H₂S↑
<span>
5.CaCO</span>₃+2<span>HCI = CaCI</span>₂ + CO₂↑ + H₂O
<span>
6.AgNO</span>₃<span>+HCl = AgCI</span>↓<span> + HNO</span>₃
<span>
7.3Mg+2H</span>₃<span>PO</span>₄ = Mg₃(PO₄)₂ + 3H₂↑
<span>
8.P</span>₂<span>O</span>₅ +3<span>H</span>₂O=2H₃PO₄
<span>
9.Cu(NO</span>₃)₂ +<span>Zn = Zn(NO</span>₃<span>)</span>₂ + Cu↓
<span>
10.Na</span>₂<span>CO</span>₃+<span> 2HNO</span>₃=2NaNO₃ + CO₂↑ +H₂O
<span>
11.Mg(OH)</span>₂ +<span>H</span>₂<span>SO</span>₄ = MgSO₄ + 2H₂O
<span>
12.Al</span>₂<span>O</span>₃+6<span>HCI=2AICI</span>₃ + 3H₂O
Надеюсь помогла:)
Не Очень хорошо знаю химию!