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study guides such as excel have heaps of practise q's in them, if you are serious about physics i recommend you get one Jamesy

Mythbusters, 7.30pm mondays SBS, shows the funny side of science Good Show

it would be very hard to work it out mathematically cos of all the variables

I'll draw you up a picture of citric acid on my chemdraw software. Check back here in a day or two, i'll have the link for u cos i'll run it off muy website Jamesy

These are the correct oxidation numbers Carbon is nearly always has a oxidation number of +/-4 Nitrogen usually has a oxidation number of -3 but can change Oxygen has a oxidation number of -2 in usually but has an oxidation number of -1 in peroxides or superoxides (potassium oxide)...

Also the concentration of HCl is not accurately known when it is manufactured. This is becuse a number of factors such as temperature and pressure. This is why the solutions have to be titrated to get an accurate concentration of the solution. Jamesy

if the exam asks you a question that is not related to a dot point then you have to lodge a formal complaint because you are being tested on things that you are not. Make sure that you complain if they don't, they have to take all complaints seriously and investigate them all Jamesy

for the sulfate test you could used barium nitrate to precipitate out barium sulfate and do a quantitative analysis on the amount present, then calculate the amount of sulfuric acid present in the sample Jamesy

95% and first out of six people Jamesy

Hey, Yeah they do clean up major spills using a neutralisation reaction. But the use of neutralising chemicals is monitored very strictly as to the salt that will be formed and the effects it has on the environment. My uncle is in the EPA so I'll ask him about it, so check back here cos I'll...

Heya there Well I'm a Yr12 student at the moment, so I probably shouldn't be writing here, but i would like to offer my assitance to all the preliminary sudents out there. I did 13 units through the prelim course and still have them at the moment. They are -Chemistry -Physics -Biology...

Which one? You mentioned that my pracs were not the detailed. Which ones are you refering to the chemistry or physics ones? Thanks Jamesy

What do you mean by that?

Hey, I run a Website that has all of my HSC Science work on it. That is all three science courses. The web address fo the site is www.geocities.com/jamesyscience At the moment the resouces on the site are limited because I'm really busy at the moment my halff yearlies. But I hope to...

I'll have a talk to my bio teacher about it. What ever path you take with the program make sure that it follows the syllabus very closely Jamesy

i do 13 units and i'm handling it quite well. they are advanced english, 3u maths, chem, physics, bio and business studies. What you need to work out is if keeping bio is advantageous? Jamesy

that is the correct molar mass 342.30g/mol. You can check reagent bottles to make sure that your caculations are right Jamesy

Commercially produced solutions of acids like hydrochloric, sulfuric and nitric are not made up to any certain standard. Thus the concentration of these solutions can vary. That is why oxalic acid is used as a standard solution because the *exact* concentration of the acid can be calculated...

Photos of Kidney disection I did the Kidney Disection Practical and I have a heap of photos from a digital camera if you want them. Feel free to email me at jamesy_1988@hotmail.com or view my website at www.geocities.com/jamesyscience So let me know if you want the photos, but they...

One method of finding the concenration of ammonia if it is in solution is to tritate it with a standardised acid solution, e.g. oxalic acid. This is because a solution of ammonia is basic because it produces ammonium hydroxide, and therefore hydroxide ions. NH3 +...