Chemistry - October 2006

Want to measure concentration of aspirin or 5-aminosalicylic acid with either UV-vis or HPLC so need a method or any information that is relevant

2006-10-29 23:41:36 · 4 answers · asked by ZP 1

2006-10-29 23:37:20 · 5 answers · asked by Anonymous

2006-10-29 23:36:45 · 3 answers · asked by champakvas k 1

Example:

Water can be freezed into ice. Ice can be melted into water.

2006-10-29 23:32:37 · 16 answers · asked by howardcheng07 2

atomic structure and the chemistry of the elements and thier compounds.

2006-10-29 22:59:31 · 5 answers · asked by Anonymous

2006-10-29 22:53:42 · 2 answers · asked by Anusherin 1

2006-10-29 22:51:14 · 1 answers · asked by Anonymous

Please answer ONLY if you know and the reason if there is 1...thx

2006-10-29 22:49:50 · 3 answers · asked by slayz456 1

2006-10-29 22:12:33 · 6 answers · asked by emma deem 1

2006-10-29 20:44:39 · 3 answers · asked by Anonymous

I am looking at making something, but i need to find out about a dye, plastic, or paint etc. that will change colour when i pour boiling water onto the other side of a piece of glass or plastic.

I know that it exists as i have seen toothbrushes that change colour when being used. Please tell me where i can find out about these products or what they are called.

Any ideas???

thank you!

Dylan

2006-10-29 19:59:02 · 2 answers · asked by Anonymous

Matter is made up of Atoms

Atoms are made up of Protons Neutrons and electrons

Protons and neturons are made of quirks

What are Electrons and quirks made up of?

2006-10-29 19:48:18 · 4 answers · asked by Anonymous

2006-10-29 19:48:13 · 3 answers · asked by outbaksean 4

The reason why I am asking this question is; today I saw a TV programme (couldn’t remember the name) had said that Ar was in our out breath and it could last very long. It further added that, even we could inhale Ar that Jesus Christ had exhaled.

Is there any true in it?

2006-10-29 19:45:41 · 2 answers · asked by hms_unseens 2

2006-10-29 18:22:35 · 7 answers · asked by ram s 1

What is the volume, in cubic centimeters, of a sample of cough syrup that has a mass of 50.0 g? The density of cough syrup is 0.950 g/cm3.

2006-10-29 17:46:00 · 4 answers · asked by Anonymous

As the atomic mass of the elements in the periodic table increase, what happens to:

1. The number of atoms in 1 mol of each element?

2. Protons

3. Electrons

2006-10-29 17:16:30 · 7 answers · asked by Lightning 1

How would electrons produced in a cathode ray tube filled with neon gas compare with the electrons produced in a cathode ray tube filled with chlorine gas?

2006-10-29 17:11:58 · 1 answers · asked by Lightning 1

2006-10-29 17:00:52 · 2 answers · asked by uchinggold 1

2006-10-29 16:57:39 · 3 answers · asked by mr full auto 1

example of liquid compound and liquid mixture.

2006-10-29 16:43:54 · 4 answers · asked by m 1

2006-10-29 16:42:08 · 2 answers · asked by Riku 1

2006-10-29 16:00:41 · 2 answers · asked by xscarredapplex 1

how much does the oxidation number of iodine increase in the reaction:

2MnO4– + I– + H2O -----> 2MnO2 + IO3– + 2OH–

is it 6?

2006-10-29 15:57:41 · 1 answers · asked by basic 1

2006-10-29 15:48:38 · 7 answers · asked by Navy SEAL - 42 2

It is the reaction scheme for the egg shell dissolved in vinegar:
CaCO3 + CH3COOH --> ?
I should know this, but I'm can't think of it today!
Also does anyone know the functions of Galactose and Maltose?
I'm trying to finish my lab notebook.
Any help is greatly appreciated!

2006-10-29 14:58:45 · 3 answers · asked by Anonymous

2006-10-29 14:46:30 · 2 answers · asked by lucky_05 1

i have 7,000 Li of a solution of pH = 2.0. i want to raise it's pH to pH = 7.0 with 40% NaOH solution. i've calculated that about 4.7 Li of the caustic solution must be added. is this correct? how do you solve such a problem? thanks.

2006-10-29 14:45:48 · 3 answers · asked by lucky_me25 1

A. The pressure is greater, and the boiling point of water is higher.
B. The pressure is lower, and the boiling point of water is higher.
C. The pressure is greater, and the boiling point of water is lower.
D.The pressure is lower, and the boiling point of water is lower.

2006-10-29 14:44:18 · 5 answers · asked by Ashley C 1

2006-10-29 14:30:21 · 16 answers · asked by kaitlin 2