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  1. C

    CSSA Economics Marks

    How'd everyone go marks wise in the CSSA paper? Our average was pretty low (high 50's) with top mark of low 90's :) edit: school rank approx. 80
  2. C

    Simple acid-base question!!

    Yeah, that's what i got too (10^-2)/3 I think the solution must be wrong... it has it at 0.14mol/L Cheers
  3. C

    Simple acid-base question!!

    This is what they've said, but I'm not sure I agree with the concentration of the citric acid... a bit confusing What's your working look like?
  4. C

    Simple acid-base question!!

    What volume of 0.250 mol/L sodium hydroxide would be required to completely react with 25.0 mL of a solution of citric acid that has pH = 2? (3 marks) Just from a past school trial, my answer didn't match up with the solutions, not sure why. Any help would be appreciated, Thanks :)
  5. C

    First term ATAR estimate :)

    Thanks guys, good motivation for the rest of the year :)
  7. C

    First term ATAR estimate :)

    School rank - approx. 70 Chemistry - 1/25 English (advanced) - 1/90 Studies of Religion (1 unit) - 1/130 Economics - 4/35 Physics - 5/35 Already done accelerated 3 + 2 unit maths; 3unit - 44/50 (mark) 2unit - 95/100 (mark)
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