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ms=30g
mw=200g
mr=ms+mw
mr=30g+200g=230g
Cp=ms*100%/mr
Cp=30*100/230
Cp = 13%
2)
m MgCl₂=95u
m 60H₂O=60*18u=1080u
ms=95g
mr=1175g
Cp=ms*100%/mr
Cp=95*100/1175
Cp ≈ 8%
3)
1. 4Al + 3O₂ ---> 2Al₂O₃
2. Al₂O₃ + 3SO₃ ---> Al₂(SO₄)₃
3. 2Al + 3H₂SO₄ ---> Al₂(SO₄)₃ + H₂
4. 2Al + 3Cl₂ ---> 2AlCl₃
5. Al₂O₃ + 6HCl ---> 2AlCl₃ + 3H₂O
4)
1. 2Ca + O₂ ---> 2CaO
2. CaO + 2HCl ---> CaCl₂ + H₂O
3. Ca + 2H₂O ---> Ca(OH)₂ + H₂
4. CaO + H₂O ---> Ca(OH)₂
5. Ca(OH)₂ + 2HCl ---> CaCl₂ + 2H₂O
6. Ca(OH)₂ + 2HNO₃ ---> Ca(NO₃)₂ + 2H₂O
ms = 30g
mr = 30g + 200g = 230g
Cp = (ms / mr) * 100%
Cp = 13%
2.
m(MgCl₂) = 95 g
m(60H₂O 0 = 60 * 18 g = 1080g
ms = 95g
mr = 95 + 1080 = 1175 [g]
Cp = (95 / 1175) *100 = 8%
3
1. 4Al + 3O₂ ---> 2Al₂O₃
2. Al₂O₃ + 3H₂SO₄ ---> Al₂(SO₄)₃ + 3H₂O
3. 2Al + 3H₂SO₄ ---> Al₂(SO₄)₃ + 3H₂
4. 2Al + 3Cl₂ ---> 2AlCl₃
5. Al₂O₃ + 6HCl ---> 2AlCl₃ + 3H₂O
1. 2Ca + O₂ ---> 2CaO
2. CaO + 2HCl ---> CaCl₂ + H₂O
3. Ca + 2H₂O ---> Ca(OH)₂ + H₂
4. CaO + H₂O ---> Ca(OH)₂
5. Ca(OH)₂ + 2HCl ---> CaCl₂ + 2H₂O
6. Ca(OH)₂ + 2HNO₃ ---> Ca(NO₃)₂ + 2H₂O