Chemistry - July 2007

or other ways to get rid of troposferic ozone (something to bind on it and make it less poisonous to lungs liver and plants)

2007-07-19 08:49:01 · 1 answers · asked by borut_veselko 1

a. slightly acidic
b. very basic
c. neutral
d. slightly basic
e. very acidic

2007-07-19 07:04:41 · 5 answers · asked by Stephanie S 1

2007-07-19 06:32:41 · 5 answers · asked by abhishek 1

2007-07-19 06:23:54 · 14 answers · asked by midnight2005 1

what does this mean?
" recognize compounds as pure substances which may be broken down into elements by chemical means"

2007-07-19 06:00:14 · 4 answers · asked by having mixed feelings 3

2007-07-19 05:54:26 · 3 answers · asked by poonam 1

I need the detailed info as a classroom interactive experience.

2007-07-19 05:48:42 · 3 answers · asked by Sharon B 1

Are there environmental concerns that arise as a result of the chemical process of cleaning? (If there are can you go into details)

Please Help me I really need it. If you give me the best answer you will get 10 points and a thumbs up. Please and Thank you.

2007-07-19 05:38:40 · 2 answers · asked by Anonymous

1>combustion in alkanes and alkenes equations.
2>action of bromine(in solvent) with alkanes and alkenes.
3>Action of bromine water with alkanes and alkenes.
4>Action of acidified potassium manganate(VII) with alkanes and alkenes.
5>Action of concentrated sulphuric acid with alkanes and alkenes.

5 euations are needed. thx

2007-07-19 05:38:11 · 3 answers · asked by mantoud 1

what is the agent that causes powder detergent to produce bubbles (foam) when mixed with water?

2007-07-19 05:33:58 · 4 answers · asked by Anonymous

2007-07-19 05:32:35 · 6 answers · asked by Anonymous

2007-07-19 05:31:24 · 6 answers · asked by Anonymous

2007-07-19 05:28:58 · 7 answers · asked by Anonymous

Aluminum reacts with sulfuric acid, which is the automobile batteries. if 20.0 grams of Al is placed into a solution containing 115 grams of H2SO4, how many grams of hydrogen gas could be produced?

2007-07-19 05:17:06 · 5 answers · asked by Anonymous

has anyone evr seen these things & i want to know the mass of these things has been calculated. sometimes it seems that no one hs ever seen these things

2007-07-19 04:52:31 · 10 answers · asked by Cave H 1

What are some clothing/ accessories that are inappropriate in a lab? And why?

2007-07-19 04:51:59 · 5 answers · asked by Drogba 2

Similarities between the two main types of bonding; ionic and covalent

2007-07-19 04:43:26 · 6 answers · asked by Anonymous

Question #1: Describe how significant digits in a measurement can indicate the precision of the instrument used to take the measurement.

Answer: The measurements recorded should include all the numbers that are known with certainty plus one digit (the rightmost digit) that is estimated. Thus, significant digits clearly show the precision of the instrument used.

Question #2: Determine how many significant digits are in the following numbers: a. 20.009 b. 0.00876 c. 45.000
d. 34500 e. 234.614

Answer:
a. Five
b. Three
c. Five
d. Three
e. Six

Are they right? Thanks for your help!

2007-07-19 04:29:40 · 4 answers · asked by Steven M 3

2007-07-19 04:11:32 · 4 answers · asked by Helen 1

compare the two main types of bonding; ionic and covalent.

2007-07-19 04:08:16 · 4 answers · asked by Anonymous

Why the alkyl halide product must be dried carefully with anhydrous CaCl2 before distillation?

2007-07-19 02:51:50 · 3 answers · asked by klaa 2

fictional elements W,X,Y,Z have electronegativity values of 1.0,2.0,2.5,3.5,respectively which bond is least polar?
a)WX
b)WZ
c)XY
d)XZ
e)YZ

2007-07-19 02:40:21 · 3 answers · asked by heri623 3

option a)compound
option b)mixture
if the answer is compound then give an example of mixture having one kind of atom(vice versa).

2007-07-19 01:14:08 · 7 answers · asked by Twarita 2

reason

2007-07-19 00:44:56 · 6 answers · asked by omer t 1

according to the principles of chemical bonding, the electrons must have opposite spins to form a covalent bond.but the electrons of hydrogen are identical.

2007-07-18 23:34:21 · 2 answers · asked by jit m 1

for example, CF3CO2H?

2007-07-18 22:31:34 · 2 answers · asked by Anonymous

2007-07-18 21:25:52 · 5 answers · asked by soor 1

1) What is the formula of the copper containing reactant?
2) What is the formula of the other reactant?
3) What is the formula of the product? List the copper first.

2007-07-18 21:02:45 · 2 answers · asked by lulu 1

2007-07-18 20:58:34 · 4 answers · asked by blah 1

can you let me know which of the following is primarily a physical or primarily a chemical change:

1) boiling an egg
2) freezing ice cream
3) souring milk
4) boiling water
5) formation of a snowflake
6) churning cream to make butter

2007-07-18 19:54:52 · 3 answers · asked by lulu 1