Chemistry - September 2006

2006-09-08 15:40:44 · 3 answers · asked by kellahrocks 1

eazy question 10 points for whoever answers. O and have you guys heard that ww3 is supposed to start 9/13 that iz so STUPID!!!!!!!!!! gawd. Im tired of people just making up random dates for random stuff!

2006-09-08 15:40:15 · 7 answers · asked by =)) 3

Does it really exist?

2006-09-08 15:18:54 · 8 answers · asked by C. T 3

What are some simularities and differences betwee the pure copper penny and the copper/zinc penny? Why did they decide to change this? And how can you tell the difference (chemically and, hopefully, physically)?

2006-09-08 14:31:50 · 14 answers · asked by horsieluverphisha 1

Estimate pH at the equivalence point of the reaction between 0.100 M solutions of ethanoic acid (CH3COOH) and sodium hydroxide (NaOH).

The answer is: Greater than 7... about 9

I just need help on how I get the answer. I'd really really appreciate anybody who could help me out.

2006-09-08 13:19:11 · 4 answers · asked by Dark42 2

2006-09-08 12:58:09 · 4 answers · asked by Moon O 1

2006-09-08 12:55:41 · 8 answers · asked by ajax p 1

Scientist say that an H-Bomb is thousands of times powerful than the A-Bomb, but what I want to know is how do they know that the H-Bomb is stonger than the A-bomb if it has never been used.

2006-09-08 12:15:16 · 5 answers · asked by Anonymous

I got a Twizler and bit off the two ends to make a straw, then put it in my cola and drank through the twizler like a straw. After about 5 seconds, the pop fizzed up and began to overflowuntil I took the Twizler out. Then it calmed down. I put the Twizler back in, but I drank enough out to keep it from overflowing, but it still fizzed. what caused this?

2006-09-08 12:11:17 · 2 answers · asked by Anonymous

How do freeze something without lower the temp?

2006-09-08 09:55:13 · 21 answers · asked by Leelee 2

2006-09-08 08:43:57 · 12 answers · asked by Swampy_Bogtrotter 4

If I were to take a bowlfull of petrol or some other highly flamable liquid.
Then I took a drop of very strong acid, and dropped it into the petrol.
Would the petrol combust?

2006-09-08 08:42:53 · 8 answers · asked by Swampy_Bogtrotter 4

Ammonia (NH3) acts as a base by bonding with H+ ions in a solution to form NH4+. This is different from other strong bases wich increase the ph level of a solution by contributing OH- ions.

Are there any acids that function by bonding directly with OH- much in the same way the ammonia bonds with H+?

This would effectively increase the ratio of H+ ions in a solution and lower the solutions ph. Such a substance would be considered acidic. Are there any real examples of such a substance?

2006-09-08 08:20:49 · 6 answers · asked by thatengineer 1

I am looking for a website similar to www.chemfinder.com I am having problems accessing the website and I would like to find a similar site where you can find the formula or structure of an specific compound plus their properties by just putting the name in the search box.

Thanks in advance.

2006-09-08 08:18:10 · 1 answers · asked by Anonymous

2006-09-08 08:15:43 · 6 answers · asked by mattandamber2003 1

How do you classfiy things like plastacine or dough. Do you calssify them as solid? Explain please.

2006-09-08 07:12:42 · 8 answers · asked by carbon dioxide 2

2006-09-08 06:50:38 · 12 answers · asked by mohamed s 1

Please help me with the formula . If an atom has 15 protons , how many electrons does it have? And how do I figure it out?

2006-09-08 06:35:59 · 6 answers · asked by Anonymous

2006-09-08 06:20:21 · 10 answers · asked by stevewfletcher 1

does anyone know the chemical formula for coal?
i can't find it anywhere!
pease help!

2006-09-08 05:38:48 · 7 answers · asked by La De Durango!!! 4

I have phosphate buffer that is pH 6.9-7.2 that I bring to pH 8.5 with hydroxide. The problem is that overnight the solutions saturate with CO2 and the pH drops to around 6.5 (the pKa of carbonic acid). I was considering using another buffer component, such as carbonate to hold the higher pH, thinking that added CO2 will now be less able to reduce the pH....any suggestions, experience or comments on this? The chemistry can't be altered too much, so I can't use exotic buffer components such as tris.

2006-09-08 05:34:28 · 5 answers · asked by Robert L. D 2

I'd like to take a 6% vinegar solution and get a 12%, but I'm not sure if simple reduction would yeild such a result. I would assume at some point the acid would begin to evaporate also, if direct heat is used....solar evaporation maybe??

2006-09-08 05:28:26 · 5 answers · asked by stimpy 2

Science question - new elements that they have found, like elements from the periodic table, but new types of elements since 1992

2006-09-08 05:28:12 · 2 answers · asked by xo-Stacey-ox 2

2006-09-08 04:40:34 · 23 answers · asked by carbon dioxide 2

The following question refers to the titration of 25.00 mL of 0.131 M HCl with 0.143 M Ba(OH)2. The reaction proceeds according to the following stoichiometry:

2HCl + Ba(OH)2 BaCl2 + 2H2O

What will be the pH of the titrated solution at the equivalence point?

2006-09-08 04:38:33 · 1 answers · asked by vem1225 1

The following question refers to the titration of 25.00 mL of 0.107 M HCl with 0.110 M Ba(OH)2. The reaction proceeds according to the following stoichiometry:

2HCl + Ba(OH)2 BaCl2 + 2H2O

What will the pH of the titrated solution be after the addition of 20.00 mL of Ba(OH)2?

2006-09-08 04:36:37 · 3 answers · asked by vem1225 1

2006-09-08 04:08:19 · 9 answers · asked by sharper 2

2006-09-08 03:42:20 · 1 answers · asked by Nathaniel 1

2006-09-08 03:20:26 · 8 answers · asked by Anonymous

2006-09-08 03:17:07 · 3 answers · asked by daivid nm 1