hermanntrude

true, also I think that even owning white phosphorus is illegal without permits now The red phosphorus says on the can that it is shock sensitive and explosive, which is why i'm a little nervous of it

I often get similar episodes, and often a period of introversion afterwards reveals the cause, which was unknown to me at the time

i've seen in tower blocks it's common for people to have model owls and falcons to scare off the pigeons. Perhaps even a model eagle will do the job. And yes a dog would almost certainly work.

I guess you're on holidays then, since your answer was unhelpful, although, admittedly very correct. the technical term is "a solution of sodium chloride". The laymen's term is "brine"

i have a bucket of red phosphorus at work. I'm scared of it.

usually in simple classes, the melting point of carbon dioxide is ignored, and it is pretended that it only sublimes. FYI the opposite of sublime is deposit

can you shoot the geese? they make a tasty meal, and after uncle harold and auntie betty get shot and eaten, the rest of the family might decide to look elsewhere

deleted. Confused myself. I have no idea how to make this stuff, sorry

the symbols "Na" and "Cl" represent single, isolated, atoms of sodium and chlorine respectively. These atoms are extremely reactive and are never seen in "normal" standard conditions, which is the kind of thing you seem to be suggesting by the phrase "glass of water". Something a tiny bit more stable would be a glass containing water and elemental sodium and chlorine which would be harder to represent. Metallic sodium would be what to expect in standard conditions, which could be represented by [ce]Na_{(s)}[/ce], and chlorine forms a diatomic molecular gas under "normal" conditions, which would be represented by [ce]Cl2[/ce]. These are still only very slightly more stable, since there would be an almighty explosion because the sodium and water would react, like this: , also the sodium would react with chlorine, like this: video however, as I said, the most stable thing containing those elements would be a mixture of water and salt, which is sodium chloride. In sodium chloride, an electron has been lost by the sodium and gained by the chlorine, resulting in a positively charged sodium atom and a negatively charged chlorine atom, which are known as ions. This is known as ionic bonding. ionic compounds tend to be soluble in water. I'd like to apologise for my fellow members' brashness and flippancy in answering your question, but i guess they must be unused to speaking to non-scientists about such topics. Fortunately, they're not teachers. PS, not really sure what you mean by *electronegativity bond"

a glass full of H2O, Na and Cl is unlikely. A glass full of H2O, Na+ and Cl- is salt water.

The reason that I can't easily provide you with an example is that examples of catalysts in equilibria are not usually quoted in the literature because there is no benefit in adding one, since it doesn't change the position of the equilibrium, only the speed at which it is reached.

A good calorimeter can be quite accurate. However, if you have the exact details of the conditions, the data should be available to be able to calculate it aluminum chloride's entropy and enthalpy of formation should both be available in any chemistry textbook

the best way would be to use a free chemical drawing program and then save as a bitmap or jpg and upload the image. Time consuming but probably the only option. Including a structural drawing program in the forum's design would probably be expensive, if i were to guess. Unless of course we have a very bored computer programmer with time on his/her hands?

you'll need to specify more details, anyway. For instance, are you doing this reaction at standard conditions or non-standard ones? You'll have to use entropy as YT says

I've been swimming in the ocean today:

by "organic chemicals", I was of course referring to synthetic, man made chemicals, the properties of which are not entirely known You can spread bird poop anywhere u like.

fascinating thing to imagine. Surely an explosion followed by flames, poisons and much destruction.

get a bird scarer and don't spread organic chemicals on the land, even if someone who sells the stuff tells you it's harmless

In an exam, the usual question is to give an equilibrium and ask what effect various changes would have on the concentration of one of the products or reactants. An example would be: [ce]2H2O <=> H3O+ + OH-[/ce] The question many students get wrong is "what would be the effect of adding a catalyst on the concentration of [ce]H3O+[/ce]?" Now I don't actually know of any catalysts for this reaction specifically, and it's kind of hard to think of an actual catalyst for an actual equilibrium, since people don't often use them, because they don't do much good, except in cases where the reaction rates are slow. However, the accepted answer for the above question is "no change" I suspect that this is actually a simplification and isn't entirely true, however, it's what is taught at degree level.

actually I live here. My 10 month old baby girl was with us in the boat and it rocked her to sleep. We'll probably do it again and again

just teasing. This is the general discussions section so i don't have to be all up-tight and proper. Cap'n, you got it right on the nubbin. Just off of north island twillingate, which is itself off of newfoundland, which is part of Canada.

gareth, it's also worth noting that enthalpy has only a partial effect on whether a reaction is spontaneous. This is why we see reactions which require energy and reactions which give out energy, both spontaneous. For more details on what determines whether a reaction "goes" at a specific set of conditions, read up on Gibb's free energy

the easiest way to visualise this is to have two tanks of water (imaginary or real), and two people, each with a bucket. They both scoop one bucket of water per second from one tank into the other. One person represents the forward reaction and the other represents the reverse reaction. The average water levels in the two tanks remain constant, however, water is moving in both directions. Interestingly, if you add a catalyst to a dynamic equilibrium, it's just like asking the guys to scoop water faster. They BOTH scoop faster (the forward AND reverse reactions are sped up) and so the equilibrium is still maintained and the levels of water don't change. Note also that if one tank has more water to begin with, it will stay that way. You can think of this as a bit like the equilibrium constant, which gives an idea of how far between reactants and products the equilibrium lies. It neednt be 50/50, in fact it rarely is. all reactions are equilibria, but in some cases the equilibrium lies so far toward the products that we might as well pretend the reaction goes to completion, and sometimes the equilibrium lies so far to the reactants, we might as well pretend the reaction doesn't happen at all.

i already told you. if you're a scientist, latitude and longitude shouldn't be too hard to figure out

toward, yes. I still have to look that one up, and last night i was out of town