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Wow, a big question. Its probably best answered by reading the plethora of explanations in text books and websites. If you want a rough nutshell summary then try: 1) A patient is put in a magnetic field. The magnetic field is used to arrange all water molecules in a patients tissue in the...

Sorry mate the idea was not to mock christianity. The idea is to put up a point of view with reasons to explain it. If you've got the same, put it up! In your post I ain't seen it. Otherwise, float off in your intoxicated world of fairytale beliefs and leave others to post some sense.

The HF bond is not a hydrogen bond. Hydrogen bonds are intermolecular and relatively weak. The HF bond is an intramolecular bond and as result much stronger.

I think christian belief is a bit of an insult to everyone. It supposes that people cant be nice to each other without the promise of great riches in an everlasting life and the threat of eternal damnation if your not nice. It also presumptuos enough to think that the only purpose in our...

The HF bond is extremely strong because of the huge dipole created by the large difference in electronegativity of these 2 atoms. More positive next to more negative = stronger bond (harder to be torn apart by H2O neighbours). Hope this helps.

Hey youre right! Was confusing 90deg with pi/4.Doh! Never did like radians. Thanks:wave:

As posted in Evolution thread: (Sorry God :burn: ) "In religion and politics people's beliefs and convictions are in almost every case gotten at second-hand, and without examination, from authorities who have not themselves examined the questions at issue but have taken them at...

How come its not t=-pi/12 ?? isnt sin(-pi/4) =-1 ?

oops, 0.25M for last result

Before rxn, Moles of Ag+ present=0.6M*.05L = 0.03 Moles CO32- present =0.8M*0.05L = 0.04 From the balanced equation you gave, the Ag+ is the limiting reagent, so it's the one which will determine the amount of Ag2CO3 produced. (coz if all of the 0.04 moles of CO32 that is there reacted, it...

Correct. The positive terminal is the long line, and it represents the cathode of the galvanic cell (power source).

And where do the electrons go? Into the metal. That would make it the anode using the above definition. If you modify the definition to Anode: place where free electrons enter the metal (solid conductor). It seems to work a lot clearer. Hope it helps.

The anode inside a battery forms the negative terminal of the battery, Its the place that dissolved ions have been oxidised and given up their electrons. In the external circuit of a battery, electrons flow from the battery's anode back to the battery's cathode through the wiring that...

Read the definition carefully. At the anode of a galvanic cell electrons enter the metal from the solution. At the anode of an electrolytic cell electrons enter the metal from the solution.

Acids don't react directly with bases as such. It's the OH- + H+ which is the neutralisation reaction and it occurs in the solution outside both the acid and the base molecules/lattice. Removal of the OH- however drives the dissolving reaction of Mg(OH)2 to the right causing more...

I think you've got to interpret the meaning of "strong base "as substances which dissociate completely when they dissolve. Otherwise you end up with contradictions such as magnesium hydroxide. Personally, I think the naming of magnesium hydroxide as a "strong base" for all practical...

oops, other way round. Anode: place where electrons enter a metal (or solid conductor). Cathode: place where electrons leave a metal (or solid conductor).

If you are after a definition that applies to both physics AND chemistry try: Anode: Place where electrons leave a metal. Cathode: Place where electrons enter a metal. I think it works in all cases, although I wouldnt recommend it as an answer in a HSC. See above posts for separate...

As you can see there is no single rule for from and to when it comes to anode and cathode, it depends entirely on the type of device you are talking about.

Chemistry Oxidation always occurs at the anode, reduction at the cathode. Physics Cathode- plate that electrons come from (when entering the external circuit).