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    What mark do you think you got?

    damn i wish i was as smart as you guys. i found it really hard, definite low 60s for me.
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    H+ concentration?

    not sure how u do it on ur calculator, but that's how i do it on mine
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    H+ concentration?

    press shift press log type in the pH press the +/- button :)
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    Membrane filters

    Well my notes say "water is made to flow across the membrane not through it. This reduces the blockage factor". However, I don't really understand the difference between across/through/along ... don't they all mean the same thing!?
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    Membrane filters

    thanks so much mercedes!! that's really helpful, it's a bit more clearer now. thanks for the paint diagram haha it helped :)
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    Membrane filters

    Could someone please help me.. im a bit confused.. Why is the water made to flow ACROSS the membrane and not THROUGH it? What is the difference?? thanks!
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    Neutralisation as a safety procedure

    if its on the floor, use a solid, such as in a powdered form, so it soaks it up, instead of using liquids which would spread it even more. and maybe u could also talk about the use of substances containing an amphiprotic ion..?
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    buffers

    thanks heaps guys :)
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    buffers

    Hey, could someone please help me with the specific example of a buffer in a natural system? I've got some info on blood as a buffer, but i'm finding it really hard to understand it. Does anyone hav an example of a different buffer in a natural system?? Or maybe someone could explain...
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    Dry Cell

    Does anyone know the equation of what happens at the cathode ?? Thanks :)
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    Solutions

    these solutions are so depressing, looks like ill only be getting 42/84 max :(
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    American Dreams

    Does anyone watch American Dreams??? ITS SO GOOD!! my fav show!! It's on 9:30am on channel 7 weekdays.
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    Ernst & Young

    Im in business assurance. what school are u at?
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    Ernst & Young

    hey, i just discovered this forum thing tonight, im a bit slow... i got offered a traineeship with EY and PwC and i accepted Pwc... is there anyone else here who will be starting a traineeship with pwc next year??
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    Who Works/worked ar Target

    i worked at target for like 2 years, IT IS SOO BORING!!! i worked at hornsby and chatswood, argh it was alright for the first 2 months then i hated it.
  19. A

    Thoughts - How did you all find the exam?

    the world cities essay was good! the economic activity essay was soo bad, so outta no where!!!
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