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    (Original post by sharmonraja)
    What did you get for the half equation with ClO- to produce chloride water or something ?
    And what was the overall equation that you got
    I got 2ClO- + 4H+ + 2e- --> Cl2 + 2H2O

    Overall
    2ClO- + 4H+ + 2Cl- --> 2Cl2 + 2H2O
    ( not sure if this is right though )

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    (Original post by sharmonraja)
    I thought the most polar molecule was BF3
    And I thought the reducing agent was C2O4
    BF3 has polar bonds but since there are no lone pairs and bonds are identical, dipoles cancel out and its a non polar molecule.ClF3 had 2 lone pairs making it the most polar
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    (Original post by uud)
    Question about velocity of 52Cr+. Is V=1.714X10^6 ms^-1
    Yes thats right
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    (Original post by Lemonpopsicle2)
    Which board and paper is this?
    Aqa
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    (Original post by DaVinciGirl)
    I got 2ClO- + 4H+ + 2e- --> Cl2 + 2H2O

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    Yesss I got that
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    (Original post by IntellectualBoss)
    BF3 has polar bonds but since there are no lone pairs and bonds are identical, dipoles cancel out and its a non polar molecule.ClF3 had 2 lone pairs making it the most polar
    Ohh okay, and what about the reducing agent, C2O4 or Cr2O7 ?
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    What do you think the grade boundaries will be?
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    (Original post by nadeu01)
    what did everyone think of the exam doe?
    Put it this way the whole class cried
    I didn't even answer most of it
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    For the question where is was the same electron configuration as krypton, was the answer selenium or strontium?
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    Do you think it will be 60 for an A?
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    Same, I ran out of time and had to rush the multiple choice so I guessed some of the wordy ones.
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    (Original post by SargentZenj2)
    Do you think it will be 60 for an A?
    I think/hope it will be around 60 because it's a new spec
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    (Original post by Christie_xx)
    For the question where is was the same electron configuration as krypton, was the answer selenium or strontium?
    I put strontium
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    What type of bonding was it between Aluminium and Nitrogen? Was it dative?

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    (Original post by spidle)
    Same, I ran out of time and had to rush the multiple choice so I guessed some of the wordy ones.
    Yeah I didnt have enough time for the last multiple choice
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    (Original post by DaVinciGirl)
    What type of bonding was it between Aluminium and Nitrogen? Was it dative?

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    Yeah
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    (Original post by DaVinciGirl)
    What type of bonding was it between Aluminium and Nitrogen? Was it dative?

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    Yes that's what I wrote. The lone pair from nitrogen is donated to aluminium.

    Then the bond angle decreases to 109.5degrees because there are 4 bond pairs
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    (Original post by DaVinciGirl)
    Density of gold was 19.3

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    a 5 year old could get that one. 19 grams, 19 kilograms or 190kg
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    (Original post by SalazarSlytherin)
    a 5 year old could get that one. 19 grams, 19 kilograms or 190kg
    Lol now I think about it thats true

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    (Original post by DaVinciGirl)
    I had three peaks. Two was 25% and one was 50%

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    if i remember in the question they said the isotopes were in equal abundances
 
 
 
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