Chemistry - September 2007

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2007-09-14 05:00:41 · 2 answers · asked by Anonymous

Which one of these two guys works better as a chelating agent in Food Industry or in Textile Industry? Why?

2007-09-14 04:41:31 · 2 answers · asked by Anonymous

What volume of a liquid having a density of 6.44 g/cm3 is needed to supply 9.00 grams of that liquid? Answer in cm3. I've tried to just plug in the known values to D=M/V and I'm not getting the right answer but I was told by a TA that by manipulating D=M/V to V=D/M I could get the answer. What I get is 6.44g/cm^3 / 9.00g, which comes out to .715555556 which with sif figs comes to .716 after rounding. Any thoughts?

2007-09-14 03:35:04 · 2 answers · asked by steelhead3686 3

Gas molecules has mass but, is it attracted to gravity?

2007-09-14 01:51:56 · 5 answers · asked by lester l 1

not sure how to do these..Im supposed to write the partial equations for the following and then write the products I believe will form. Any help??

1) Fe(s) + Cu(2+) (aq)----->
2) Mg(s) + 2 H(+) (aq)------>
3) Cu(s) + 2 Ag(+) (aq)------->
4) Zn(s) + Cu(2+) (aq)------>
5) Cu(s) + Zn(2+) (aq) ------>

2007-09-14 01:09:11 · 1 answers · asked by Anonymous

How many grams of Bromine are in 3.5x10^9 g of seawater which contains 65 ppm by mass Bromine


I need help figuring out how to do the problem. if you show me the work I will reward you the points

2007-09-14 01:03:32 · 1 answers · asked by Anonymous

How many atoms are in 2.4 grams of Strontium

I have the answer I just dont know how to do the problem, please show work and I will give you the pts.

2007-09-14 01:02:06 · 3 answers · asked by Anonymous

2007-09-13 19:48:03 · 1 answers · asked by elle 2

2007-09-13 19:30:56 · 4 answers · asked by xtremegms360 2

continued....
turn certain elements into others by either taking or removing protons? Is it theoretically possible to turn hydrogen into gold by adding enough protons? Is the reason this is impossible because there would be a release of atomic energy like a nuclear bomb?

I realize this is impractical for wealth-building even if its somehow possible because gold isn't worth much in the (femto???)-technology scale.

2007-09-13 18:23:53 · 4 answers · asked by Matt 1

2007-09-13 18:09:44 · 6 answers · asked by Anonymous

2007-09-13 18:06:03 · 5 answers · asked by Anonymous

2007-09-13 18:01:36 · 8 answers · asked by Anonymous

4)to estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. how high is the building if the splash is seen 6.8 seconds after the sone is dropped? Position function given: -4.9t^2 + vt + s t

2007-09-13 17:03:23 · 2 answers · asked by Anonymous

expectations?
this is an english question from the scralet letter story please give me the answer.

2007-09-13 16:35:09 · 2 answers · asked by oooooooooooo 1

Does Hydrogen burn alone?
Does oxygen burn alone?
And did anyone believe Democritus at the time of his Atomos theory.

2007-09-13 16:06:03 · 7 answers · asked by Anonymous

2007-09-13 15:01:07 · 9 answers · asked by Anonymous

Give the name for each of the following:

SnCl4

CsCN

2007-09-13 14:41:26 · 6 answers · asked by Anonymous

2007-09-13 11:47:14 · 4 answers · asked by ~USA~ 2

2007-09-13 11:47:02 · 5 answers · asked by Colleen C 2

2007-09-13 11:28:13 · 7 answers · asked by Anonymous

6 * 84.3

and

54.5 * 3.7

2007-09-13 11:21:27 · 1 answers · asked by sillyboys_trucksare4girls 2

2007-09-13 10:23:08 · 5 answers · asked by vincentchan16@sbcglobal.net 2

okais,

i have the product for a reaction: ethanol, c2h5oh
how do i work out the reactats?

2007-09-13 10:15:57 · 3 answers · asked by Anonymous

2007-09-13 10:13:33 · 4 answers · asked by Pauly Walnuts 2

i have a chemistry test tomorrow and i have no clue how to do this?
can you please explain how you would do this problem:

Find density of 25g of copper in 4.8 liters of H2O??

2007-09-13 10:13:31 · 2 answers · asked by Anonymous

Chem hw. is this right? : 10 km x 1000m/1km x 1760/1m x 1mi/1.094 yd = 6.21 miles

2007-09-13 10:10:25 · 3 answers · asked by Anonymous

2007-09-13 10:05:12 · 4 answers · asked by vincentchan16@sbcglobal.net 2

I'm an AS level student and I was wondering what exactly is the control of a chemical experiment. There's an example of an experiment which involves extracting potato juice from a potato and adding it to glucose and adding iodine to discover that the potato juice has turned the glucose into starch. Apparently the control of the experiment is an enzyme. But why is it an enzyme?

2007-09-13 10:00:53 · 3 answers · asked by Anonymous

(CH3)2CHCH2OH

(all the numbers shouod be subscript)

Please could you write the answer in like this for example:
2-methyl-2-ol

2007-09-13 09:34:38 · 1 answers · asked by Muppet 2