CH2-CH2<span> а)1,2-дихлорэтан;</span>
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Cl Cl
CHCl-CH3<span> </span><span>б)1,1-дихлорэтан;</span>
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Cl
CH3-CH-CH-CH3 <span> в) 2,3-дихлорбутан</span>
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Cl Cl
CH3-CH-CH-CH-CH3 <span>г)2,4-дибром-3-хлорпентан;</span>
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Br Cl Br
CF3-CF3 <span>д) гексафторэтан </span>
<span>CHBr-CH-CH2-CH3 </span><span> е) 1,1,2-трибромбутан</span>
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<span> Br Br</span>
CaO+SO3=>CaSO4
1)n(CaSO4)=m(CaSO4)/MM(CaSO4)=20/136=0.147
2)n(CaO)=(CaSO4)=0.147
3)m(CaO)=n(CaO)*MM(CaO)=0.147*56=8.232
Ответ под цифрой 4) Na2SO3 – сульфит натрия
2CH3COOH + 2Na = 2CH3COONa + H2
CH3COOH + NaOH = CH3COONa + H2O
2CH3COOH + Na2CO3 = 2CH2COONa + H2O + CO2
2CH3COOH + Na2O = 2CH2COONa + H2O