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  1. A

    What grades should I expect in chemistry?

    what do you guys think i'm gonna get p11 29 p21 hoping for a 59 p32 30
  2. A

    Overall Chemistry discussion AS May 2012.

    what do you guys think i'm gonna get p1 29 p2 hoping for a 59 p3 30
  3. A

    chemistry practical 32 discussion

    can you tell me what you calculated to get a rate that high? /:
  4. A

    chemistry practical 32 discussion

    wait how was the rate in thousands? if you divide 0.0485 or whatever you got by the time it would be a very small number?
  5. A

    chemistry practical 32 discussion

    Lead Chloride is insoluble.
  6. A

    chemistry practical 32 discussion

    people at my centre got around the same times. for the second experiment a couple of guys and i all got 126 seconds. DAFUQ. :|
  7. A

    chemistry practical 32 discussion

    the whole calculation part was like 3 marks so i think you would only lose 2 worst case scenario
  8. A

    chemistry practical 32 discussion

    I don't think they're too low. It took around 89 seconds for the blue black colour to appear with 20 cm3 of FB1. If it was gonna decrease by around 2000 it wouldn't take 89 seconds /:
  9. A

    chemistry practical 32 discussion

    Yea there was a guy who got your answer at my centre too. I think you'd lose a max of 1-2 marks. Even if you took the value they gave you and you weren't able to calculate it you'd only lose a max of 2 and here there's an actual attempt so yea. My answer is probably wrong though. Story of my...
  10. A

    chemistry practical 32 discussion

    my decrease was 0.00167..i have a feeling i messed up though. my rates ranged from around 0.000113 to like 0.000180. i found it kinda hard to believe that it would decrease by THAT much in one second so i stuck with those values.
  11. A

    chemistry practical 32 discussion

    lol dude that's way too high..2000 mol.dm-3 per second?! i doubt it. they even said we would have to use a value around 2.25 x10-3 if we don't get the answer. 0.0485 is way too high. i think if we had to subtract it from something they would also tell us to use the information shown opposite...
  12. A

    chemistry practical 32 discussion

    i got the decrease as 0.00167 too.
  13. A

    Mathematics: Post your doubts here!

    Can you just show me what you got for total no of arrangements and no of arrangements when no G's are next to each other
  14. A

    Mathematics: Post your doubts here!

    Can you just show me what you got for total no of arrangements and no of arrangements when no G's are next to each other?
  15. A

    Mathematics: Post your doubts here!

    I know I won't get 5040 but why is it negative? Why is the number of arrangements when none of the G's are next to each other more than the total? Where's the mistake?
  16. A

    Mathematics: Post your doubts here!

    Yea it is 5040. I got the same when I did 7*6*(6!/3!). What I wanna do is total no of arrangements - arrangements when none of the G's are next to each other.
  17. A

    Mathematics: Post your doubts here!

    My answer to 7*6*5*6!/3! is 25200. But the total number of arrangements is only 10080. (9!/3!*3!)
  18. A

    Mathematics: Post your doubts here!

    GGG REEENA. I did 7*6*5 as in 7 places for the first G, 6 for the second and 5 for the 3rd G. and 6!/3! is the number of arrangements of REEENA.
  19. A

    Mathematics: Post your doubts here!

    Find the number of different ways in which the 9 letters of the word GREENGAGE can be arranged if exactly two of the Gs are next to each other. Now in this question I understand the way to do it but when I was trying to do it in different way, I hit a wall. I know I'm doing something wrong I...
  20. A

    Mathematics: Post your doubts here!

    Find the number of different ways in which the 9 letters of the word GREENGAGE can be arranged if exactly two of the Gs are next to each other. Now in this question I understand the way to do it but when I was trying to do it in different way, I hit a wall. I know I'm doing something wrong I...
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