JMaydom (Online)

hey how do you get so good at chem ? ;D

Sorry bother you but could you help me really quickly with a short chem question? (I don't really need lots of help, just to know if my answer is right or not?)

nah, man. the original author graduated ages ago.

i was in trinity 08 - 12. Worked for Mountford in my part II year. Who are you working for next year?

Hey man, thought since you are in Oxford, you might find this useful. What year you in now anyway?

http://www.alchemyst.co.uk/alchemyst...p?target=about

Heyy,
I was wondering if you could help me out in a question, as i've already made a thread but no one answered and its a bit urgent...

pH: 4
molar extinction coefficient: 0.0187142857 m-1cm-1
absorbance at 500nm: 1.492
methyl red concentration: 12.5um
3ml buffer used and 1ml stock methyl red.

[Acid form]?? (work out using molar extinction coefficient)
[base form]? (12.5-acid form?)
lg([acid]/[base])?
pKa?

I'd greatly appreciate if you could explain this question or even jus the acid form..

Thank you

thanks for the help