Chemistry - January 2007

2007-01-17 08:49:47 · 3 answers · asked by linifer74 1

2007-01-17 08:48:39 · 4 answers · asked by linifer74 1

Where can I find this stuff at? I think it would be cool to try because it makes your voice a lot lower. It's like the opposite of hellium.

2007-01-17 08:42:47 · 5 answers · asked by ? 3

2007-01-17 08:32:21 · 9 answers · asked by Pseudowhis 2

put in order which is higher than the other

2007-01-17 07:51:09 · 12 answers · asked by Anonymous

i need help for these two question
1. In what type of ratios do atom combine to form compounds?
2. how many copper atoms would you have to line up side by side to form a line 1 m long?

2007-01-17 07:50:29 · 3 answers · asked by Crazy G 1

Please i am so stuck on this question.
Thanks Konka.

2007-01-17 07:36:43 · 11 answers · asked by Anonymous

i need to find out some metals that you would find in your home. could you help me out

2007-01-17 07:32:47 · 17 answers · asked by steve 2

A 0.5130g aspirin tablet which was dissolved in 95% ethanol required 27.98mL of 0.1000M NaOH for neutralization. then an additional 42.78mL of 0.1000M NaOH was added and the solution was heated to hydrolyze the acetylsalicylic acid. After the reaction mixture was cooled, the excess base was back-titrated with 14.29mL of 0.1056M Hcl. How many grams of acetylsalicylic acid are in the tablet? What % w/w of the tablet is acetylsalicylic acid?

2007-01-17 07:30:41 · 2 answers · asked by nik 1

What is more reactive silicon or chlorine?

What is more reactive beryllium or strontium?

Hydrogen is located above Group 1A because it has one what?

2007-01-17 07:28:02 · 4 answers · asked by Anonymous

http://img165.imageshack.us/img165/1314/2ta8.png

In which segment of this figure will properties of the elements vary the most? A or B?

2007-01-17 07:21:38 · 4 answers · asked by Anonymous

2007-01-17 07:14:58 · 5 answers · asked by krazy lover 1

2007-01-17 07:13:24 · 7 answers · asked by Anonymous

2007-01-17 07:10:40 · 3 answers · asked by krazy lover 1

2007-01-17 06:51:16 · 14 answers · asked by Anonymous

a small quantity of strong base.

2007-01-17 06:48:56 · 1 answers · asked by Arnold M 1

Calculate the Ksp value for bismuth sulfide, Bi2S3, which has a molar solubility of 1.0*10da-15mol/L @ 15C

2007-01-17 06:46:43 · 2 answers · asked by Arnold M 1

lactic acid is a waste product that accumulates in muscle tissue during exterion, leading to pain and a feeling of fatigue. In a 0.100M aqueous solution, lactic acid is 3.7% dissociated. Calculate the value of Ka for the acid.

2007-01-17 06:43:55 · 1 answers · asked by Arnold M 1

Hydrocarbons

2007-01-17 06:33:35 · 8 answers · asked by Anonymous

I know that they act abnormally.

2007-01-17 06:21:07 · 3 answers · asked by mbtafan 3

http://img179.imageshack.us/img179/9789/nucleartablevi4.png

Can you help me explain how the mass and the atomic numbers of an alpha particle can be used to determine the number of neutrons in the particle by using this table?

2007-01-17 05:49:15 · 3 answers · asked by James 1

i mean why can ya smell wats cookin.... ya know like wat does the food or watever do to the air ta make it smell?? or am i totally messed up??lol

2007-01-17 05:38:25 · 5 answers · asked by akvarn1 3

Normally, the actual yield in a chemical reaction will be equal to or less than the theoretical yield.

2007-01-17 05:35:53 · 5 answers · asked by Anonymous

2007-01-17 05:28:10 · 5 answers · asked by cshirl07 1

2007-01-17 05:27:29 · 11 answers · asked by knightrider1uk 1

2007-01-17 05:26:58 · 4 answers · asked by cshirl07 1

i have noticed in the lab, that a small amount of blue CuSO4 crystals (like 0.5g or even smaller than that) when dissolved in water makes it a greyish-white opaque colour. when u go on adding more and more copper sulphate crystals and dissolving them in the water, the solution becomes more and more aqua blue and transparent in colour.
why does this happen? does it have anything to do with the way the CuSO4 crystal is structured?
i am using this in a physics experiment. i want to know if a solution of very low concentration CuSO4 (that is more opaque in colour) will allow more light to pass through it than a solution with a higher concentration of CuSO4 (that is clear blue in colour) or not?

2007-01-17 05:09:46 · 2 answers · asked by amandac 3

could you also explain it i dont have a clue about how you get lime, wot the chemical symbol is or anything. Thank You

2007-01-17 05:07:05 · 1 answers · asked by stace9012003 2

2007-01-17 05:03:46 · 3 answers · asked by manuelkuhs 1

2007-01-17 05:03:43 · 3 answers · asked by jordan k 1