Chemistry - March 2007

2007-03-18 13:01:08 · 1 answers · asked by Beck 1

A ) rubber
B ) metal pipe
C ) plastic
D ) glass

2007-03-18 12:42:56 · 6 answers · asked by ♥ 6

What is the connection between chemistry and physics?

2007-03-18 12:36:41 · 4 answers · asked by IDchecker27 2

2007-03-18 12:27:57 · 1 answers · asked by Kristin R 2

2007-03-18 12:27:18 · 2 answers · asked by Kristin R 2

I need to describe the effects of Ernest Rutherford and Frederick Soddy's discoveries about radioactivity on our society but I'm stuck and I'm not too sure what to write. Any help would be appreciated.

2007-03-18 12:22:27 · 2 answers · asked by glance 3

2007-03-18 12:18:47 · 3 answers · asked by Rachel 1

2007-03-18 11:54:12 · 3 answers · asked by Anonymous

2007-03-18 11:53:59 · 1 answers · asked by Ani B 1

4.3 x 10^-4 is the Kb of C2H5NH2. I keep trying this problem and getting the wrong answer. I'm out of ideas on what I can do. Can anyone help me to solve this please!!

2007-03-18 11:44:33 · 3 answers · asked by CurlySue 2

can any one help me with this

2007-03-18 11:43:11 · 2 answers · asked by Nobodys Right If Evrybodys Wrong 3

for eighth grade science worksheet

2007-03-18 11:36:21 · 1 answers · asked by Anonymous

HElp and fast! What color are PRotons Neutrons and electrons in an atom?

2007-03-18 11:33:17 · 6 answers · asked by charmedmagick28 2

What is the amount of ammonium chloride that has to be dissolved in 141 mL of 0.205 M NH3 (Kb= 1.8*10-5) to make it a buffer with a pH of 9.01, in g?

2007-03-18 11:26:31 · 1 answers · asked by Ryan C 1

2007-03-18 11:18:17 · 1 answers · asked by Kristin R 2

2007-03-18 11:17:49 · 2 answers · asked by Georgie Z 1

This is about the electrons in atoms.

2007-03-18 11:12:27 · 3 answers · asked by 56984 2

Chem question: what mass of solid NaOH must be added to 1L 2M HC2H3O2 to produce a buffered solution at pH=pKa?

I'm interested more in the process by which one would obtain the answer, rather than the answer itself.

2007-03-18 11:07:09 · 2 answers · asked by cotofana_ana 2

I have a presentation based on Scientific Literacy and my topic is molecules and bonds. So my question for y'all is what do you believe is a significant topic under the category of molecules and bonds? In other words, what do you remember most clearly from what you learned about molecules and bonds? Thanks!!

2007-03-18 11:05:33 · 1 answers · asked by Anonymous

2007-03-18 10:45:53 · 1 answers · asked by kohlirosy 1

2007-03-18 10:35:13 · 2 answers · asked by kevin n 1

I need to know what percentage of Zn- zinc and Cu - Copper are found in a penny of that year.

2007-03-18 10:29:53 · 1 answers · asked by Jayla L 1

for example: CAR C- carbon and AR- argon

2007-03-18 10:29:43 · 4 answers · asked by Anonymous

2007-03-18 10:08:59 · 4 answers · asked by Anonymous

589mm) and 760mm, the distillate contains 6.0g of water and 11.0g of oil. Calculate the molecular weight of the oil.

Someone please help me with this problem. Thanks.

Oh, one more thing, what is the chemical equation of eugenol benzoate???

Please tell me if you know, no need for unnecessary answers.

Thanks again!!!

2007-03-18 10:08:37 · 2 answers · asked by Anonymous

whats the difference between the first periodic table ( mendeleev ) and how is it different from the on we use today ? just wondering

2007-03-18 10:07:09 · 2 answers · asked by lancasterangel03 2

Suppose you wanted to add just enough 0.40M calcium chloride solution to 75.0 mL of 0.60M sodium carbonate solution for all of the sodium carbonate and calcium chloride to react,,,,,,,,,

2007-03-18 09:59:08 · 4 answers · asked by Anonymous

2007-03-18 09:49:11 · 4 answers · asked by --~-_.*._-~-- 2

2007-03-18 09:48:01 · 1 answers · asked by --~-_.*._-~-- 2

2007-03-18 09:34:03 · 2 answers · asked by kat_suzz 2