Recent content by ohms law

I see that... sort of. It's a form of factoring, obviously. I don't quite get the \frac{x^2}{a^2} bit, though... Well, wait: a^2\times1=a^2 obviously, and a^2\times\frac{x^2}{a^2}=x^2 right? Neat trick, there. Completely obvious too, now that I think about it, but... I guess that I just didn't...

This equality is given in an example, in my textbook: \int\frac{1}{a^2+x^2}dx=\frac{1}{a^2}\int\frac{1}{1+(\frac{x}{a})^2}dx So, my question is simply... how? This is really more of an algebra question, but it'd really help me to see some more detail here.

Gen chem, so all equilibrium constants are dimensionless. Period. You're talking about stuff in physical chem. I have enough on my plate without adding unnecessary complexity, thanks. :) Here's a more complete explanation, though: Besides, this problem was about finding the...

ps.: If glass is a better conductor, then heat will move through it faster, right? If more heat leaves rather than being measured by the thermometer, then... ? By the way, I hate these questions. They're dumb, because this is stuff that you'll come to realize on your own. This crap is just...

Think about your tools... the thermometer itself has to react in order to measure the temperature change. If it's measurement is off (as all measurements are), then how will that affect your analysis of what's happening? If you've actually lost 10 units, but your measurement is showing that you...

This, I think. Remember what entropy is about (things not wanting to be "pure", basically). what's the problem statement, anyway?

Don't get caught up in all of that right now though. There's these things called isotopes, where atoms have different amounts of neutrons, but that's not important to this discussion. A "mole" is just a convenient unit. Most textbooks compare it to "a dozen", because it's actually used in the...

Also, a hydrogen ion (H+) is positive when it loses an electron. You're talking about it gaining an electron to complete its "octet", but that would be noted as H-. At rest, a single hydrogen has a single electron associated with it though. Atoms like to be neutral, rather than ionized in any...

Yea, don't get hung up on the "efficiency" word too much. They're referring to mechanical motion specifically, but you need to do a lot more than just move around in order to continue to exist. This reminds me of the "humans only use 10% of their brain" fallacy. Your brain has to keep you...

The reasoning here is the same as for all elements: the octet rule. The only difference is that hydrogen and helium are so simple that their "octet" is only two atoms. This stuff is really all about geometry. Everything in the universe is in a 3d matrix (well, 4d really, but we're being...

@epenguin, it's an equilibrium constant (K), not a rate constant (k). :) One thing about this reaction that someone at school mentioned was that in real life it takes place in a pressurized system, so 8000 Molarity CO isn't that ridiculous if we're talking about a system at 100 atmospheres...

Nice attitude there.

Ah: My bad, then. That wasn't clear from what you were saying, but... no big deal. Anyway, you're describing the role of this forum to be a replacement for the classroom rather than a sort of adjunct tutoring center. If that's the common attitude around here, then I'm clearly in the wrong...

Agreed... I'm not sure what that has to do with the topic, though. The OP was wondering about the reasons why identity is determined by protons, which seems a sensible question to me.

You gave: ln\Big(\frac{[A]_t}{[A]_0}\Big) = -kt Which, if you look at my first post above, I had already provided. So, my question was, as I stated (if you had bothered to read instead of simply throwing insults about your assumption of my math skills), does that mean the natural log of the...