Yeah at the isoelectric point, amino acids neutralise themselves because H+ ion from the carboxyl group bonds to the amino group. Below the IEP there is an excess of H+ ions floating around so the carboxyl group gets its proton back leaving the molecule positively charged. Above the IEP there is...
When a H atom bonds to a highly electronegative atom it pretty much becomes a bare proton which is highly electropositive. Electropositive things attract electronegative things so this proton will be attracted to electronegative atoms like O or N.
Well period 4 elements will be way bigger than period 3 elements and as a result their effective nuclear charge is a lot weaker because their nuclei are shielded way more (due to the greater number of electrons surrounding the nuclei). Thats why electronegativity usually decreases as you move...
Heres the question:
http://img194.imageshack.us/img194/9042/vanthoff.png
and here's the Van't Hoff equation (the form I like to use):
[PLAIN][PLAIN]http://img703.imageshack.us/img703/1577/vtequation.png
I'm a bit confused about what's going on here. I see the formula includes ∆Ho, meaning...
Yeah I'll post the questions in the forums anyway, that way I'll get explanations from more than 1 person. Borek that's a brilliant site you started there. I was thinking about making a site like this for a long time but didn't have the time to get it started. If you need any help I'm fairly...
On an exam I got this question:
[PLAIN]http://img849.imageshack.us/img849/5732/spontaneity.png
but at the time I had no idea how to answer it. I still don't really know if I can answer it. I can explain it mathematically with the equation: ΔG = ΔH - TΔS seeing as a spontaneous reaction...
Thanks c03rcion. What I was struggling with was balancing the oxygens at the end, I didn't think of using a fraction to balance it then multiplying every coefficient by the denominator of the fraction. I've been practicing a fair bit and now I have no trouble with these combustion equations. I'm...
No. In my summer exams I had a Hess' Law question that I couldn't even start because I couldn't balance the equation for the combustion of acetaldehyde.
EDIT: I looked it up and I see now that when I have trouble balancing 1 element like that I just put a fraction beside it then multiply...
I'm in my 3rd year of a chemistry course so its fairly ridiculous that I can't balance equations. I can balance simple equations in my head in seconds but what I need is an algorithm that I can use to balance any equation I will ever encounter. Can any of you teach me a method for balancing...
Its pretty frustrating now being able to pinpoint the source of this quote. The fact we don't know whether that's a quote or a paraphrase or whether Tesla actually said anything like that at all adds an extra layer of ambiguity.
I read somewhere that he said "he who knows the magnificence of the number 3 will understand the mechanisms of the universe" or something to that effect. Just because he had OCD doesn't mean he didn't have a valid (with respect to his belief system) reason to indulge in a particular obsession.
I've read plenty of claims that Tesla had an obsession with the number 3. I read about half of his autobiography so far but I didn't come across any mention of the number 3. Anyone know why Tesla had an obsession with the number?