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    CHEM2911 vs. CHEM2401

    Hmmmm I see. Thanks for the reply. Guess I'll stick with advanced chem then :)
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    CHEM2911 vs. CHEM2401

    I know that in first year chem, the only difference between adv. and reg. was the content taught in lectures. Is that the same with second year chem?
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    How would you draw this?

    ahh i see... thanks for clearing it up :D
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    How would you draw this?

    Really? haha sorry :) hmmm... how does |z- i| and |z - 1| both look like? are they still circles?
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    How would you draw this?

    {z e C | |z − i| < |z − 1| }?? Thankyou :D
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    pH of resulting solution

    Cool so I'm right? Thanks :D
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    pH of resulting solution

    In an experiment, a student mixed 15.0mL of 0.030mol L-1 HCl with 20.0mL of 0.010mol L-1 Ba(OH)2. Calculate the pH of the resulting solution. The answer is 6.76 but I got 2.845. As you can see I'm way off. Please help :D
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    HSC 2012-2015 Chemistry Marathon (archive)

    Re: HSC 2012 Chemistry Marathon Firstly, to calculate the concentration of Na2CO3 we will need to use the formula c=n/v. Therefore from the given information v= 0.25L, and n will need to be calculated using n=m/M. n(Na2CO3)= 1.432/2(22.99)+12.01+3(16) = 0.0135.... c(Na2CO3)= 0.0135...../0.25...
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    Series & Sequences (Loans)

    Your welcome, also yes they can/do pay the first instalment in the same year they borrowed the money hence why the $8000 is multiplied by 1.07. Which means that they are paying back the 8000 they borrowed plus the interest which is calculated before the first instalment. So the first instalment...
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    Series & Sequences (Loans)

    A1= $8000x1.07 - M (where M is the yearly repayment) A2= ($8000x1.07 - M)x1.07 - M = $8000x1.072- M(1.07+1) Therefore: An= $8000(1.07)n - M(1.07n-1+......+1) A10=0 $8000(1.07)10 - M(1.079+1.078+.....+1)= 0 M= $8000(1.07)10/1.079+1.078+.....+1 M= $8000(1.07)10/ [1(1.0710 -...
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    lectures

    ah I see, thanks for clearing that up, kinda nervous about starting uni.
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    lectures

    thanks for the heads up, hopefully they do implement the new elearning app because I just got an ipad for uni :D I just logged in and the only subjects that I'm enrolled in is maths. I thought that lectures aren't recorded for maths?
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    lectures

    thanks and another question where are the lectures uploaded?
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    lectures

    I'm sorry if this has been asked before but I'm wondering if any of these lectures are recorded: MATH1001 MATH1002 CHEM1901 BIOL10031 BIOL1911 Thankyou! :D
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    salt concentration

    yep think so :)
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    Calling all high achievers.

    +1 Just did the bare minimum. Still went fine :) ATAR= 95+
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    Arrhenius

    Using arrhenius' definition of an acid, what would NaHCO3 be classified as? Would it be an acid because it releases H+ ions in solution? NaHCO3 (s) → Na+(aq) + H+ (aq) + CO32- (aq)
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    Talented Student Program Invitation

    you mean the 20th? I got the letter as well, wasn't expecting it though :D
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    Calculating help please :D

    She did well considering she had a terrible teacher for chem. I don't think that anybody noticed the typo, even the teacher.
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    Calculating help please :D

    Thanks plus repped :) No wonder I couldn't do it and lol it was in my friend's prelim paper too...
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