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  1. CalSandercock

    how much did you write?

    I've heard from the markers that they hate it when people just spew information instead of writing a well-structured argument. Believe it or not like English, sophistication of answers which also relates how succinct you are, plays a major role into how a marker recieves your answer and...
  2. CalSandercock

    2006 HSC Question

    Actually I just looked at my success one and the answer is completely different - simultaneous wouldn't have worked because the two distances and two force values are different. here is the success one Answer. The force between two current-carrying rods is given by Ampere's law ie...
  3. CalSandercock

    2006 HSC Question

    Maybe try using two different values of the the bottom current in the parallel conductors formula and then solve the two equations simultaneously? Or figure out how the change in weight equals force and then you just sub into the formula :)
  4. CalSandercock

    Multiple Choice

    Hey about the 15 question. If you think about the acids and their pHs if the strong acid has a pH of 1 and the weak acid has a pH of 4 or something and they both are 0.100/mol , then doesn't it make sense that there are is a smaller concentration of hydrogen ions in the weak acid and would...
  5. CalSandercock

    questions about industrial chemistry.

    Guys i think its the other way around Anode: 1/2H2(g) + OH- -> H2O + e- Cathode: 1/2O2(g) + H20 + 2e- -> 2OH- Because although the charge of the electrodes change, Oxidation still happens at the anode and Reduction still happens at the cathode I think....... Any what was the answer...