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    transuranic elements and commercial radioisotopes?

    "- remember the difference between transuranic elements and commercial radioisotopes BUT their production are by the same two methods" This question was in the 2003 HSC paper too, but I can't find the answer... Can someone explain to me?
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    What's the answer for hsc2005 q's 27?

    Can someone give me the answer to hsc2005 q's 27? I don't understand the graph at all Why the concentraition of reactants and product do not change between T1 and T2? if the molar concentraition of hydrogen and nitrogen decrease, shouldn't the ammonia molar concentraition decrease as well?
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    RET questions

    Recently,I have received a letter from UWS about a RET(Region Entry Test). I read the booklet which told me that there is two STAT... multiple choice and writing english... My question is if I'm not really good with english, is it still possible to achieve a good mark(70+)? And also if...
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