Recent content by muneexa

Where are you located? Which city?

MATHS p1, m1, s1 and p3 past papers nov. 2001 - june 2011 with marking scheme and examiner reports - RS. 300 CHEMISTRY p1 and p2 june 2002 - june 2010 - RS. 100 CHEMISTRY p4 and p5 june 2002 - june 2011 with marking scheme - RS. 200 PHYSICS p1 and p2 june 2002 -2010 - RS. 100 PHYSICS p4 and p5...

I still dont get it :S

Also I dont understand why in normal distribution questions if it is for example " find the probability that x is more than 13" in the marking schemes it sometimes states p(z>13-mean/s.d) and other times it P(z>13.5-mean/s.d) how do we know when to do which one????????

Can anyone help me with Q.5 part 1. please!! http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w11_qp_61.pdf

http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_41.pdf Can anyone please solve Q.3? I don't understand what directions to take for the x and y components.

what about bond length in hydrogen halides? does it also increase down the group?

Thanks TheMan123! another question http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9701%20-%20Chemistry/9701_s05_qp_1.pdf Q. no 16 why isn't the answer A? Doesn't bond length in X2 decrease down the group?

Which organic molecules are planar other than ethene????