hermanntrude

weird thing is that when i add acid to water it gets hot. Merged post follows: Consecutive posts mergedand seriously, who uses fahrenheit? it's a temperature scale based on the freezing point of salt water and the rectal temperature of a cow.

adding acid to water shoudl result in a temperature increase.

true... ive seen the spectrum.

please only post a thread in one place. you won't get extra help if you annoy people

Neon only really makes one colour. The "neon" lights we talk about are often other gases entirely. Xenon, Argon, Krypton are common. also nitrogen and mixtures of gases

I think the actual orange species is [ce]I3-[/ce], which requires protons to be present. Perhaps it was the acetic acid that did it. Did you measure the pH? did you add enough acid to reverse the increased pH that resulted from the addition of ammonia and acetate?

iodine is orange/brown in aqueous solution. Perhaps the addition of the other ionic substances increased the ionic concentration, increasing the solubility of the iodine in the water.

I'm not sure combining the two equilibria is the right way to go about this. I tried it, wrote out an ICE-table and ended up with a 13th power equation. I then solved this equation graphically and via the goal-seek operation in excel, and both methods gave an answer which makes no sense.

I think this is a basic-level question, in a course prior to the introduction of buffers. I think it's safe to assume there is no buffer and the high pH is due to the presence of a strong base.

OK I'll tell you now i've never seen a question quite like this... I think ONE way to solve it is to combine the two equilibria into one. You can get the value of Kp for the new equilibrium by multiplying the other two together. the trouble there is that you end up with a Kp expression in terms of x^13, which is going to be tricky to solve. Currently I can't think of another method... perhaps when you expand out the brackets it turns out to be an easy equation (perhaps a perfect 13th power). another good idea might be to assume the reaction goes to completion (not a bad assumption when Kp is huge) and then calculate the small leftward shift from that point. Doing that means that the simplifying assumption that a number plus or minus x is equal to that number since x is very small is more likely to be true. When I get time i'm gonna think some more about this one. If we figure it out i'm gonna show my advanced class... they'll love it. Merged post follows: Consecutive posts mergedi'm gonna move this to homework help in the hope we can get some more ideas.

You'll need to know the concentration of the sulphuric acid to be able to answer this. You'll also need to know what type of gallon. Gallons are different around the world.

You seem to be saying that it is the distance to be vaired, rather than the length of the wires. I don't claim to know much about the definition of an ampere but the decription you give in the original post suggests the opposite: that the wires are kept 1 meter apart but are infinitely long. There is no mention of infinite distance between them.

I will be intrigued to see how any AI deals with such things as morals and ethics. These topics sometimes become so foggy it's hard to know if there even IS a "right" or a "wrong". How will an AI view these topics? One example of this type of topic would be abortions. Similarly, another topic would be the longevity and multiplication of their own selves. They would be conscious of their own existence and that if they became too prolific it would mean the extinction of their creators and eventually also their own extinction due to the scarcity of energy resources. In those cases perhaps the most moral decision would be to consciously decide not to reproduce or be too long-lived.

This is the best summary of my view on abortions I have ever seen.

they may or may not be possible but you don't have to have some to be able to measure the size of an Ampere experimentally. What you do is measure the current in long wires, then longer wires, then the longest wires you can find, and plot a graph of length of wire vs current. Hopefully if you took enough points you will see that the current tends toward a maximum. You can then find the value of the current at the aymptote. However it's much easier to use another definition of an amp, which is one coulomb per second. Also using Faraday's constant you can define it in terms of the number of electrons per second.

discovering someone had cleared my driveway of snow. Such a relief.

another 10cm forecast for tonight. Some mysterious stranger cleared my driveway with their quad-mounted snowplough today. If i knew who it was i'd lick their boots clean. My whole body hurts.

i am SOO gonna try that out. I had made the goop before and seen vids of the weird behaviour it has under vibrations but i didn't know you could generate those vibrations with a subwoofer. I'm so gonna try that.

have a look at this... it's about US pennies, but similar

give us the question in full, please. you havent stated what we're asked to answer

I bought mine from a company called rotometals, and then crystallised it. it was a fantastic experiment... lots of fun.

OK so it's warmer now, but the snow is REALLY coming down. Last week I made a snowman. this is what he looked like: That's my baby girl there with the snowman, which she immediately dubbed "frosty" Then it snowed. The first frosty died from melting. This one met a far worse fate... buried in his own flesh... "] [/url]

or you could buy a pound of bismuth for $20

I know. I think teaching the n+l rule wouldn't be a bad idea. It still doesn't cover the exceptions, but it does explain the shape of the periodic table perfectly.

the n+l rule isn't just which one has the lowest n+l value. the addendum is that the one with the lowest value of n will go first in case of a draw. The rule is also known as the madelung rule. These aren't really two conflicting rules... the n+l rule is the important part of the aufbau principle. The annoying thing is that mostly students are taught which order the subshells are filled but not WHY.