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  1. F

    Chemistry Coursebook 2nd Edition (A2 Part + Some AS)

    NO WAY!!! I thought I'd discover the missing elements! and here I go! Huh!
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    A level Biology: Post your doubts here!

    thank you so much! :)
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    Chemistry: Post your doubts here!

    thank you...it pretty much explained
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    A level Biology: Post your doubts here!

    you are a biology student too, couldn't you make the genetic diagrm for me please?
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    Chemistry: Post your doubts here!

    Do you mean to say that it's the acid that has gone under nucleophilic substitution? but aren't those bromoethanes that go into nucleophilic substitution?
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    Chemistry: Post your doubts here!

    How can I know by just looking at the skeletal formula whether it contains a CH group a CH2 or a CH3, like there in the image, if I've gotta write it's structural formula, what it's going to be? I know that one projecting above must be a CH3 but what about the other four?
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    A level Biology: Post your doubts here!

    no...the book of Mary Jones Biology
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    A level Biology: Post your doubts here!

    "The allele for grey fur in a species of animal is dominant to white, and the allele for long tail is dominant to short. Using the symbols, G and g for coat color, and T and t for tail length, draw a genetic diagram to show the genotypes and phenotypes of the offspring you would expect from a...
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    Chemistry: Post your doubts here!

    Are you done with the whole syllabus? Actually, I've covered almost whole AS Chemistry but this question is still out of my comprehension. As far as I know, nucleophilic substitution involves halogenalkanes. Since all the halogens are more electronegative than carbon (with the exception of...
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    Mathematics: Post your doubts here!

    how do I distinguish between discrete and continuous random variables in Statistics?
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    Chemistry: Post your doubts here!

    half equation for iron: Fe 2+ >> Fe3+ + e- half euation for MnO4 ions: MnO4- + 5e- + 8H+ >> Mn2+ + 4H2O we multiply the first half-equation by 5 so that the electrons will cancel: 5Fe^2+ >> 5Fe^3+ 5e- Combining both we have: MnO4- + 5Fe+ + 8H+ >> Mn2+ + 5Fe3+ + 4H2O Check they...
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    Maths, Addmaths and Statistics: Post your doubts here!

    Of course I'd know that ! no prob! thnx again :D
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    Maths, Addmaths and Statistics: Post your doubts here!

    Thank you! :)
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    if he doesn't himself know he has to offer prayer, no need to marry him! :D

    if he doesn't himself know he has to offer prayer, no need to marry him! :D
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    Mathematics: Post your doubts here!

    'Find the cartesian equation of the locus of the set of points P when P is equidistant from the point (4,1) and the line x=2.' x=2 is a whole line, how am I to know from which point P is equidistant?
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    Mathematics: Post your doubts here!

    My apologies for posting in the wrong thread! and yeah..I'm in A'Level sooo I'v to do it? :( was so excited to skip :p you know that excitement when you can't understand something and you check the syllabus with the hope that it isn't included :D
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    Maths, Addmaths and Statistics: Post your doubts here!

    but over here we found the mid-point because we needed to find mean. Refer to the original question: http://papers.gceguide.com/A%20Levels/Mathematics%20%289709%29/9709_s11_qp_61.pdf Question 6
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    I wonder how do people study latenight! My mind refuses to work after 8 and my eyes after 10!!

    I wonder how do people study latenight! My mind refuses to work after 8 and my eyes after 10!!
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    Maths, Addmaths and Statistics: Post your doubts here!

    Mid-point is found by adding upper and lower boundaries and then dividing by 2. Over here, it goes like this: (1+100)/2 = 50.5 (101+150)/2 =125.5 (we used 101 instead of 100 because the 100th term was included in the previous point) (151+200)/2=175.5 (201+250)/2=225.5 (251+350)/2=300.5...
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    Maths, Addmaths and Statistics: Post your doubts here!

    Need formula sheet for O'Level Mathematics D syllabus, anyone got it? I had it made once but seems like I've lost it :(
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