Qualification > Sciences
Edexcel CHEMISTRY DOUBTS!!!!
Deadly_king:
--- Quote from: -Cornea on September 28, 2012, 02:02:35 pm ---is anyone over here doing AL chemistry if so i need a proof for bohr's theory of atomic structure it's not actually a proof it's the steps from where did we we get tht 109678 number ....Thanks in advance :)
--- End quote ---
It's just a constant which you need to use ;)
I doubt you need to know how it is obtained!
http://library.thinkquest.org/19662/low/eng/model-bohr.html
baditude:
Can someone please help me with January 2010, unit 4 Question 26
ASAP please, i've got an exam tomorrow.
Deadly_king:
--- Quote from: baditude on December 11, 2012, 04:41:38 pm ---Can someone please help me with January 2010, unit 4 Question 26
ASAP please, i've got an exam tomorrow.
--- End quote ---
I don't have the paper :/
Can you post the question itself or provide a link to the paper?
Maheen.S:
hey could anyone please link me to 'edexcel george facer teacher guide' for A2 bio and Physics...i got it for A2 chem...(AS if possible for chem and physics)....pleaseeee anyone?? :) thanks!
Za_shadow:
plzzzz helppp mee
jan 09 question 23 c i )
why did he multiply 2*0.01/2 *100
and didn't multiply 30*0.5/30 *100
jan 2010 Q5 why A i don't understand the question :(
and Q6 why A not C
May 2010 Q4 (a) why B ??????
May 2011 Q8 why C ???
and Q9 why C ???
really appreciate anyy helpp and thank u veryyyyy mucchhhh
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