Chemistry - July 2007

2007-07-14 09:30:21 · 7 answers · asked by Anonymous

ok, i need to answer this over the summer in preperation for my a level course next year. Like find out the advantages of using coal to run cars and so on, instead of petrol. (yeah, i know it's a stupid idea, and that it's never going to happen, but i seriously have no ideas). I mean, is there any way to make coal liqued at room temperaturs, so you can put it in pumps and cars etc, and so on?

2007-07-14 08:16:42 · 16 answers · asked by Kit Fang 7

It is suppose to be mixed with other hair lightening product that I do not have/nor do they sell it where I,am at. IF this is H.P then I should be able to use it without other product.Just with a little daker shade of hair lightening.Maybe more Red if used on brown hair..Correct? Thank You in advance.
from a wannabeblondeieee lol wth me friend =)

2007-07-14 07:05:32 · 3 answers · asked by reseda1420 4

numerical value as well as definition ?

2007-07-14 06:49:46 · 7 answers · asked by Emmanuelle E 2

I have a weird chemistry problem and i wanted to know if i could multiply the equation by e after i multiplied it by log.

2007-07-14 06:39:46 · 3 answers · asked by Catcher InTheRye 2

all elements present in the metallic medicne may be unknown. What would be the process of determining the molecular formula using XRD( X-Ray Diffraction)

2007-07-14 06:19:56 · 4 answers · asked by Ann 1

Why do you have to cool the methanol first before sulfuric acid is added to it? What is the cause of it to react so violently when you don't cool the methanol?

2007-07-14 06:16:32 · 7 answers · asked by MangaJunkie4Life^^ 3

Describe the relationship.

2007-07-14 06:13:37 · 2 answers · asked by violinist girl_lucia 1

2007-07-14 06:11:29 · 13 answers · asked by Sujith 2

HELP!! THANKS =]

2007-07-14 06:07:53 · 5 answers · asked by kenane w 1

just tell me the details, no apathy please

2007-07-14 06:01:27 · 4 answers · asked by cannystonehenry 2

a person traveling west gains an hour when he croses a time zone. the person crosses the ______ _____ ______ AND WILL THEREFORE NOT GAIN SEVERAL DAYS BY TRAVELING WEST AROUND the earth several times

2007-07-14 05:57:15 · 3 answers · asked by Anonymous

2007-07-14 05:49:03 · 4 answers · asked by Anonymous

thank you in advance for those who will answer my question. :)

2007-07-14 04:46:11 · 7 answers · asked by littlelucygirl 1

A solution of 2g in 50g of another solution freszes at 1.05 degrees celcious. What is the MOLAR MASS of this substance?

2007-07-14 04:13:25 · 2 answers · asked by Anonymous

2007-07-14 03:25:27 · 6 answers · asked by Hermione 1

According to dictionaries, osmotic pressure is the pressure exerted by a dissolved substance in virtue to its molecular motion. But does the 'dissolved substance' mean the solute or the solvent? Does the pressure refer to the pressure exerted by the solute or the solvent molecules?

2007-07-13 22:12:27 · 5 answers · asked by Anonymous

2007-07-13 18:04:16 · 5 answers · asked by クリスマス ^-^ 2

2007-07-13 16:01:53 · 4 answers · asked by Anonymous

I was wondering what the the heaviest type of metal is? I mean like the metal you can use to build stuff not music

2007-07-13 15:48:16 · 9 answers · asked by Anonymous

Firstly, if I were to set an ordinary cellphone on fire, would it pose a serious hazard? That is to say, does a cellphone (non-color screen, no camera or mp3 capabilities) contain any parts which may explode or present any other serious hazard to the participants of this stunt upon exposure to flame?

Secondly, is vinegar flammable? If not, can anyone recommend any common household liquids which may have the desired effect?

Thanks

2007-07-13 12:39:26 · 8 answers · asked by Anonymous

Please can someone help me with this chemistry?

2007-07-13 12:34:35 · 4 answers · asked by Anonymous

2007-07-13 10:06:04 · 7 answers · asked by nightowl 2

Can you explain what this means, thanks G

2007-07-13 08:28:17 · 5 answers · asked by Anonymous

Hello there, I have been doing a thing called enthalpy - I am good at it but there is a problem: I don't know how to do this one question!

"A polystyrene cup containes 50cm3 of water at 21.2*C.

2.53 g of of powdered ammonium chloride (NH4CL) was added and dissolved with stirring.

Calculate the lowest temperature which the solution should reach given that the enthalpy of solution of NH4CL is +15 KJ mol-1."

I know the answer is 17.8*C. BUT I don't know how to do the sum.

Can you help please help?

Just show me the how you worked it out.

2007-07-13 07:36:43 · 2 answers · asked by Anonymous

For testing purposes I am supposed to know what ATP, ADP, and AMP are.

I know that ATP is the source of energy for all body activities and that ATP is a nucleotide containing 3 phosphate groups, a nitrogen base, and a sugar.

But...what is AMP and ADP? How do they relate? Basic, fundamental explanations is all I need as I am in Anatomy and Physiology 1. Thanks.

2007-07-13 07:11:56 · 6 answers · asked by Anonymous

2007-07-13 06:42:47 · 7 answers · asked by ni n 1

to read article
go to http://www.biochemj.org/bj/391/0285/bj3910285.htm#REF12

2007-07-13 06:16:04 · 2 answers · asked by galas 1

Refer to the periodic table for atomic weights.
Please help me with this question on showing me how to work it out and find it. Please and thank you for anyone who decides to help.

2007-07-13 06:04:30 · 2 answers · asked by Kristina H 1

It is asking to calculate the molar concentration of the solution.
Whoever does this will please do it step by step becasue i have the correct anwer I just don't know how to work it out.
Please, Please Help!!!

2007-07-13 06:02:18 · 4 answers · asked by Kristina H 1