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

    2
    There was a percentage yield question??
    Offline

    0
    ReputationRep:
    There was a differences in mass spec question??
    Offline

    1
    ReputationRep:
    (Original post by haes)
    There was a percentage yield question??
    I dont even know i gussed the seconf half
    Offline

    2
    Guys isn't this the AS thread??
    How many s.f did you put the mass of ammonia as??? I put it as one because the temperature was 300K, but everything else was in 3sf so i didn't know which one to pick??
    Offline

    3
    ReputationRep:
    Bf3 dipole strongest,
    1:4 ratio of hydrogen
    Cro7- agent
    Decrease ionisation down group 2
    H2 molecules was 1.81 *10^24
    The acceleration of k.e due to mass difference
    All multiple choice answer I can remeber
    Offline

    2
    ReputationRep:
    A lot of those are wrong

    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by haes)
    Guys isn't this the AS thread??
    How many s.f did you put the mass of ammonia as??? I put it as one because the temperature was 300K, but everything else was in 3sf so i didn't know which one to pick??
    What was your answer for the first part? I had like 7 x10^-1?
    Offline

    15
    ReputationRep:
    3 molecular ions peak for the bromine abundance graph
    Offline

    3
    ReputationRep:
    (Original post by moshe015)
    A lot of those are wrong

    Posted from TSR Mobile
    What myn 😖
    Offline

    1
    ReputationRep:
    (Original post by haes)
    There was a percentage yield question??
    I don't think so, that may have been on the CHEM1 paper

    (Original post by studenttsxz)
    There was a differences in mass spec question??
    There was a mass spec question but i can't remember anything on 'differences' between mass specs
    Offline

    3
    ReputationRep:
    (Original post by metrize)
    3 molecular ions peak for the bromine abundance graph
    2 at 25, 1 at 50
    Offline

    15
    ReputationRep:
    (Original post by Asad_2015)
    2 at 25, 1 at 50
    Yep i got that, think noone else i know got it, they just put 2 peaks at 79, 81
    Offline

    2
    (Original post by tajtsracc)
    What was your answer for the first part? I had like 7 x10^-1?
    0.7! So same thing!!!!
    Do you think the answer was to 1sf because a lot of people are telling me it was to 3
    Offline

    1
    ReputationRep:
    (Original post by metrize)
    3 molecular ions peak for the bromine abundance graph
    Yeah, first peak and last peak at 25% abundance and middle peak at 50%
    Offline

    3
    ReputationRep:
    (Original post by metrize)
    Yep i got that, think noone else i know got it, they just put 2 peaks at 79, 81
    Yes cause u can have 79,81 or 81,79
    Offline

    1
    ReputationRep:
    That was the worst Chemistry paper I've seen, I literally can't believe they made it so bad. What did you put as the compound that had the ions with charges of -2 and +3 with the same Mr of argon?
    Offline

    2
    (Original post by thompsonnn)
    That was the worst Chemistry paper I've seen, I literally can't believe they made it so bad. What did you put as the compound that had the ions with charges of -2 and +3 with the same Mr of argon?
    P2Ca3 but i have no idea lmao
    Offline

    2
    ReputationRep:
    (Original post by haes)
    0.7! So same thing!!!!
    Do you think the answer was to 1sf because a lot of people are telling me it was to 3
    I can't remember, I was stressed beyond relief during this paper, waaaay too many long questions.
    Offline

    2
    (Original post by tajtsracc)
    I can't remember, I was stressed beyond relief during this paper, waaaay too many long questions.
    Indeed. I knew I would run out of time so I did everything so quickly
    Offline

    1
    ReputationRep:
    (Original post by haes)
    P2Ca3 but i have no idea lmao
    I put OF but I spent way too long trying to figure it out and just guessed it in the end
 
 
 
  • 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
    Would you like to hibernate through the winter months?
  • 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.