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Peggy
@Peggy
May 2019
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Qu'elle qu'un pourrais m'aider à résoudre cette exercices svp
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scoladan
Verified answer
Bonjour,
1) Polymérisation en chaîne (l'autre type étant la polymérisation par étapes)
2) faible densité, souples, isolants
3) H
|
- CH₂ - C -
|
CH₃
⇒ -CH₂-CH(CH₃)-
4) M(M) = 3 x M(C) + 6 x M(H) = 3x12 + 6x1 = 42 g.mol⁻¹
5) M(P) = 2500 x M(M) = 2500 x 42 = 105 000 g.mol⁻¹
6)
CH₂-CH(CH₃)
|
-CH₂-CH(CH₃)- + -CH₂CH(CH₃)- → -CH₂CH(CH₃)
2 votes
Thanks 2
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bonjour,Je n'arrive pas du tout qui peut m'aider svp (exercice sur le cosinus)Merci :)
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Lista de comentários
Verified answer
Bonjour,1) Polymérisation en chaîne (l'autre type étant la polymérisation par étapes)
2) faible densité, souples, isolants
3) H
|
- CH₂ - C -
|
CH₃
⇒ -CH₂-CH(CH₃)-
4) M(M) = 3 x M(C) + 6 x M(H) = 3x12 + 6x1 = 42 g.mol⁻¹
5) M(P) = 2500 x M(M) = 2500 x 42 = 105 000 g.mol⁻¹
6)
CH₂-CH(CH₃)
|
-CH₂-CH(CH₃)- + -CH₂CH(CH₃)- → -CH₂CH(CH₃)