wolfson

I remember reading that this complaint was related to low sodium in the body. Maybe drinking more water or eating a banana or two as well will help.

Yer thats it.

Try writing A in the form A=1000a+100b+10c+d, where a,b,c and d are the digits of A's decimal expansion. Then see what happens if you reverse and subtract. Ask if you need a further hint.

As far as I can remember thermopaste or senso, enables the transfer of heat at a more effective rate without so much waste, i suspect it would make the "reading" temperature of the element more "actual", by means of transfering the data to your meter without so much waste so the test becomes more efficient.

Sodium silicate and water (with high concentration of minerals) with a touch of citric acid to get a gel like fluid, although this process is hard and takes time to get the right consistency. Id go for buying a bottle at your local hardware store, ask the person in the store for the gel, and make sure the contents are approx the same as the chemicals i stated above, he/she should have it in store or be able to order some for you.

BC calc AP 04 is that a-level math to me?

[/b]BTW what kind of science project is this, seems childish. A regular chemistry experiment to show behaviour. Whats mine my name mean? On obvious typo.

http://www.keygrovemarketing.co.uk/ There are a good out-let

Well i want to begin studying forensic science for a bit, ive watched Quincy and CSI and shows like that for a while. A bit unreal, try Discovery channel "Forensic files" Im wondering if theres any good online or mail order stores (UK) that carry things such as Luminol (C8H7O3N3)and other things you might see on TV. There are numerous outlets that supply investigative material for serology, latent prints and moulding also chemicals. I seen in another thread someone is doing a science degree with forensic science or something and I just wonder if your doing a profesional degree do you do all the science stuff or is it mostly law? I am that person, i am studying BSc (Hons) / ASFI, that is applied science and forensic investigation, science more than law, although you can study Forensic science with law, the main areas are that of chemistry biology maths and physics, you also have research methods, investigative techniques, photography, a small section of law (approx 6-hours), and an area of serology, you also have lots of labs, but i was good at science and already had a BSc (Hons) Chemistry, you would need a-level chemistry and maths at grade C or above or a GNVQ chem high level. and is things different in england because ive heard there are SOCO's (scence of the crime officers) that collect the evidence and then deposit it back at a lab? Usually for testing yes, there are strict rules that you MUST follow. An how does Luminol actually work? See gregs link. Hope that helped anymore questions just ask.

control variable the size and weight of the wood must be equal, also the hanging equipment. If they were different this could alter (and would) your results and your experiment would not be correct. independent variables the things you will change the temp and dampness. Keep the same control variables. And the time you it will take to brake the bond between wood and glue is a dependent variable.

If they sell x of product A at profit 180-3x each (having subtracted off the £40), how do you find the total profit for product A? Do the same for product B and you should have your answer. If that doesn't help, think how much profit you'd make if you sold 5 of A at a profit of £3 each!

ill mega that

Well whenever you have time, we could have a trial run.

Sorry for the delay, me broadband connection failed yesterday. I envision a site that offers many critical methods, to improve and help the learning process, not only for students but also to parent(s) and adults, who have been “out” of education for a long period. A real goal would enable SFN to offer a vital interactive role, unlike the “homework” section, which offers only primary learning methods, such as answers with NO interactive interface. The perfect idea would be a structured network, which allows a mentor/tutor to have One 2 One learning with a user (student/parent/adult). With many users on this site who have great skills in scientific subjects, the idea would incorporate a mentor/tutor and an assistant mentor/tutor, and I don’t just mean one mentor for each subject. We could have learning on specific areas of science subjects, such as algebra in Mathematics, the circulatory system in Biology, motion and forces in physics and electronic configuration in Chemistry. Another part of this network would offer Online exams, so the mentor/tutor could assess the level of help needed, and to help in planning revision guides. This would have to be done in a private part of the site, to ensure One 2 One learning. I could go on and on but please tell me what you think it will be appreciated. <Wolfson>

Well the idea came from another science forum site that already runs the same kind of system that i mentioned, it does involve the teaching and explaining part yes, and also the revision organisation part as well.

What do you guys think about starting a mentoring group on SFN, which would help children and adults with there current learning subject(s), i.e. G.C.S.E. A-level ect… We could have user(s), defined to a particular subject, which they have studied or excel in, i.e. Chemistry, Mathematics ect… And also amalgamate that with a revision programme? Any views?

it doesnt have to be always equal to positive because it can also take the value of 0 Perfecto, as you say people do confuse only positive without the addition of 0.

Hot pumice/Al2O3, i think will have to look it up.

Good, i will add a bit tomorrow, oh and ive answered your math question on AOM.

For rectangles, here's a way of thinking about it which is helpful. Drawing a rectangle on the board is equivalent to drawing two vertical lines and two horizontal lines, and then colouring in the rectangle enclosed by them. Think about how many choices you have about where to draw each line. Jordan try and integrate the problem to find an nth term.

1) Lets say you have a .00035 L volume of .25 M Pb(NO2). What are the moles of Pb2+? This is my guess on how to do this. Since molarity = moles/volume...molarity of pb2+ = moles of pb2+/.00035 But how would i know what the molarity of Pb2+ is?? Can i just use .25 M Pb(N02) instead? Is it the same thing or am i missing something here Molarity varies on volume and number of moles, the M = N / V is correct, you do not need to change that, and no dont start using other compounds, if you are given calculate number of moles of HCL you calculate that only nothing else. 2) Lets say you put a test tube which in a hot bath for 30 seconds. Then you shake and stir the test tube and the solid precipitates. Is this an endo or exo thermic reaction? My guess is that its exo, because the surroundings are hot? But i am not sure, since the precipitate dissapears, wouldnt the equilibrium shift to the reactant side, meaning few products, which means endothermic?? Using thrmodynamic equations would resolve any problems, but just remeber that the equilibrium always balances, hence the word equilibrium, and also if no heat was needed to activate the reactions, and it let out heat them it would be exothermic, and opposite is endothermic. 3) Lets say you have a pH of 0.10 M HCN solution which is 5.2. What is the [H+] and [CN-]. I know that pH = -log[H+], so to find the [H+] i would just take the antilog, but then how would i find the [CN-]? To find the [OH-] amount use the water constant Kw (1.0e-14), thus you will realise that Kw/molarity = [OH]- amount. A^2 + L(n)^k = pL anymore help just email, or ask.

Chemistry --- The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems. Physics ------ The science of matter and energy and of interactions between the two, grouped in traditional fields such as acoustics, optics, mechanics, thermodynamics, and electromagnetism, as well as in modern extensions including atomic and nuclear physics, cryogenics, solid-state physics, particle physics, and plasma physics. From the Dictionary online.

Because they both cover different angles, the chemistry angle, how the matter invloves chemistry and the physics is the mechanics part, well im sure thats kind of close, but if you listen to the physics "guru" he'll say that all is a sub-set of physics hmmmmm

It studies them because they decay, emitting radiation, which is studied in Physics Not really MD further chem studies decay rate, half-life Nuclear Chemistry and all

it is adj./hyp. in a right-angled triangle So you have done trig