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  1. ?

    98 Chem tutor/99.80 atar/2023 graduate

    Hi my name is Mat and I am currently offering tuition for the following subjects ->Chemistry (mark of 98) 1st at girraween high school ->3u Math (mark of 97) 2nd at girraween high school -> 4u math (mark of 94) 1st at girraween high school My rate is 70/ph for these subject one on one
  2. ?

    Buffer Q

    any clues on how to do this, the given solutions are straight up wrong
  3. ?

    solubility

    Why is solubility higher at higher temperatures? Would it be because the water molecules bombarding the ionic lattice are more energetic and so can liberate ions more efficiently?
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    UV vis

    I am a bit confused for this cause as im not sure how the wavelength for the peak intensity is used as a distance for measuring
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    Ca(OH)2

    Wait how can this be a strong base if it is a slightly insoluble salt?
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    Binomial

    does anyone know how to do this?
  7. ?

    Q

    shouldnt the answer be A?
  8. ?

    Inverse

    Is this okay to prove D is correct?
  9. ?

    Question

  10. ?

    Proofs

    for ii) can u just take the case where k is even and odd?
  11. ?

    Resistance

    So ive seen a variation of questions use mkv or kv for resistance but they never specify which one to use as they usually say 'resistance is proportional to velocity' so I was just wondering how do you know which one to use? Thanks
  12. ?

    Integration

    I lowkey have no clue
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    polarisation

    Why is it b? Like if Polariser 2 is 45 degrees then 1/2 goes to polariser 3 at which intensity halves again giving a
  14. ?

    NH3

    Could a reason that arrenhius can't account for nh3 being basic, be that he doesnt account for the role of the solvent as h20 donates a proton to water?
  15. ?

    Conjugates

    Would it be incorrect to say that H2CO3 is the conjugate acid of HCO3- ?
  16. ?

    Vectors

    for ii why would the velocity vector be tangent ?
  17. ?

    calibration

    Does anyone else get what I get?
  18. ?

    2020 hsc

    does my method work for iii?
  19. ?

    mechanics

    does anyone know how to do this i tried resolving but the answer does come out
  20. ?

    Binomial probability

    for part (ii) in the ans they take P(X<9) but shouldn't it be P(X<8) cause thats less than 9 and cause its discrete you can have 8.5 ppl?
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