Chemistry - October 2006

I know this is a bit elementary, and i love chemistry and im only just starting it. Would someone care to give a straightfoward explaination of a mole and how we use them in chem with examples with different elements? Thank you.

2006-10-06 09:28:50 · 9 answers · asked by k soni 2

I put all my questions into an image file. Thanks to whoever helps me! I tried all of these questions, but I am getting the wrong answers. Please help me

http://img171.imageshack.us/img171/1742/chemistryhelplh5.jpg

2006-10-06 09:10:50 · 5 answers · asked by Hadeer S 1

2006-10-06 09:02:37 · 3 answers · asked by Princess_IN_Training 1

You may be helping a lot of people to save money and keep healthy by answering and share your experience using Brita filters.

I found that Brita Filter replacement cartridges and similar products are extremely expensive. Not mention if you have to pay for the water+sewage as well in your monthly utility bill.

1. Is it good for pregnant woman to drink water filtered by brita instead of buying bottled/distilled water?
2. Is brita filter cartridge contains only activated carbon, what are the white/cream particles inside?
3. Is it easy to regenerate just by boiling it, or you have to reactivate the carbon by baking or burning it?
4. Can you replace the carbon with regular activated carbon (with the same particle size)?

2006-10-06 08:27:36 · 5 answers · asked by coza b 2

2006-10-06 07:41:34 · 6 answers · asked by umai92 1

Which of the following are most likely stable ions ?



a) Li2+



b) Be2+



c) Ga3+



d) Ne-


explain why

2006-10-06 07:27:50 · 3 answers · asked by Paul S 2

Is K2O( Potassium oxide) in the group of an atom? Molecule? Element? Ionic Compount?

Is P2O5(Phosphorus Pentoxide) in the group of an atom? Molecule? Element? Ionic Compount?

Is Water in the element group? is it an ionic compound?

2006-10-06 06:39:37 · 6 answers · asked by ohmv87 4

lead pencil is nothing but a pencil wich we use for drawing.

2006-10-06 06:32:49 · 11 answers · asked by Sandeep 1

Cause diamond has carbon in it and so does charcoal and charcoal burns so do diamonds do

2006-10-06 06:15:36 · 16 answers · asked by Adam B 2

when I take the natural log of a concentarion of a chemical reaction, which way does the slope have to go to tell me the order? (first or second). I need this to find the rate constant and the half life.

2006-10-06 06:11:53 · 1 answers · asked by cassandracorrao 3

I heard that it would kill you by replacing every H in your body with D, but how is that possible since D2O is made by distilling water over and over again to concentrate HDO?

2006-10-06 05:59:21 · 9 answers · asked by Sadbh 3

Also anything else to do with drawing NMR Spectra would be useful. I know the basics but it's just when they become more complex that it confuses me

2006-10-06 05:41:43 · 2 answers · asked by Anonymous

h2o melting point

2006-10-06 04:59:25 · 10 answers · asked by olvinclaros 1

1. vinegar and battery acid

2.lye and ammonia

3. distilled water and rainwater

4.ammonia and calcium carbonate

5. vinegar and ammonia

2006-10-06 04:59:04 · 3 answers · asked by Laugh-n-fart 3

Choose from below please:

1. automobile engines
2. hydroelectric plants
3. burning of coal
4. burning of natural gas
and 5. gasoline-powered lawnmowers

2006-10-06 04:55:04 · 3 answers · asked by Laugh-n-fart 3

Choose from below please

Nitrogen
Bakin soda
Oxygen
Calcium Carbonate
Magnesium acetate

2006-10-06 04:53:47 · 3 answers · asked by Laugh-n-fart 3

2006-10-06 04:49:49 · 2 answers · asked by Anthea Fay D 1

TRUE or FALSE:

1. The production of methane gas occours very rarely in nature.

2. Gas formation is a phase not a chemical change.

3. Every chemical reaction involves energy in some form.

4. Every chemical bond does contain energy.

5. Chemical reactions are studied by the energy contained in the productsin comparison to the reactants.

6. Chemical changes must involve the breaking and making of chemical bonds.

2006-10-06 04:24:51 · 7 answers · asked by George 2

follow up question: why cannot we use diesel fuel in a gasoline engine??

2006-10-06 03:30:42 · 3 answers · asked by loRi^^, 2

water is added to 4.267 grams of UF6. the only products are 3.73 grams of a solid containing only uranium, oxygen and flourine and .970 of a gas. The gas is 95% flourine and the remainder is hydrogen.


a. what is the empirical formula of the gas?
b. what fraction of the flouriine of the original compound is in the solid and what fraction in the gas after the reaction?
c. what is the formula of the solid product?
d. write a balenced equation for the reaction between UF6 and H20 , assume that the empirical formula of he gas is the true fromula.

2006-10-06 03:18:02 · 4 answers · asked by Sasha 2

2006-10-06 03:16:22 · 10 answers · asked by Julianne M 1

2006-10-06 03:13:43 · 6 answers · asked by Jen 1

2006-10-06 03:08:38 · 3 answers · asked by Jen 1

We are learning how to name binary and polyatomic ions (the scientific way) and Im having a HARD time figuring this out. All the "ous" "ic" "ide" "ite" "ate" "hydra" "hydro" all that crap. Anyone have a pretty easy way to remember how to do this and can explain it to me simply. Please let me know. Also Please leave your email address so I can ask more questions to the person who answers best... if you dont mind. Thanks

2006-10-06 03:02:02 · 4 answers · asked by Angel Eve 6

2006-10-06 02:59:30 · 4 answers · asked by Jen 1

2006-10-06 02:43:35 · 6 answers · asked by hdswater 1

2006-10-06 02:25:23 · 11 answers · asked by Anonymous

A fuel additive is claimed to result in significantly higher mileage in gasoline burning vehicles, if used at a dosage rate of 1 unit per 40L of gasoline.

Design should include:
A list of equipment and consumables.
Measures and precautions to be taken before during and after project to ensure valid statistical conclusions can be drawn.
Statistical treatment of data explaing rationale for choice.

ANY ASSISTANCE WILL BE GREATLY APPRECIATED

2006-10-06 02:21:54 · 2 answers · asked by Narissa J 2

Being that the Cockroach is one of the hardiest creatures. They can resist Radiation at 15 times the level a human can tolerate, they can live headless for a week and can hold their breath for 45 minutes, they can go without food for five weeks and still survive-so what exactly is in roach spray and shouldn't that be extremely poisonous to us?

2006-10-06 02:20:12 · 0 answers · asked by MAK 6

2006-10-06 01:57:14 · 1 answers · asked by keng 1