Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    10
    ReputationRep:
    How is 12 obtained?
    • Thread Starter
    Offline

    10
    ReputationRep:
    Name:  Screen Shot 2017-10-03 at 14.57.32.png
Views: 12
Size:  176.0 KB
    (Original post by marinacalder)
    How is 12 obtained?
    Online

    19
    ReputationRep:
    (Original post by marinacalder)
    How is 12 obtained?
    It isn't.
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by alow)
    It isn't.

    I thought so! Mark scheme must be wrong- do you get 3?
    Online

    19
    ReputationRep:
    (Original post by marinacalder)
    I thought so! Mark scheme must be wrong- do you get 3?
    8.
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by alow)
    8.
    care to elaborate?
    Online

    19
    ReputationRep:
    (Original post by marinacalder)
    care to elaborate?
    Each double bond can be cis or trans.

    Therefore there are 2x2x2 possible arrangements of the bonds.
    Offline

    20
    ReputationRep:
    (Original post by marinacalder)
    care to elaborate?
    It’s a case of working out all the possible combinations:

    t t t
    t t c
    t c t
    t c c

    c c c
    c c t
    c t c
    c t t
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Will you be richer or poorer than your parents?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.