Chemistry - February 2007

2007-02-05 06:09:06 · 2 answers · asked by Anonymous

I am writing a research paper on CNTs and am looking for information on the subject. Does any one know where i can find very good reliable information on the subject? I have googled and just need a few good sites or books to work with. Thanks in advance.

2007-02-05 06:07:37 · 1 answers · asked by scrplayr06 1

2007-02-05 06:02:04 · 4 answers · asked by Stacey 1

If a solution were to change its composition during freezing how do you think this would change the cooling curve?

What is the relationship between the amount of solute and the amount of freezing point depression?

Do you think all solutes would behave basically the same? What factors might make solutes differ?

What is the mass of 0.005 moles of camphor, urea, and potassium ethanoate?

Can any one answer any of these???

2007-02-05 05:55:33 · 3 answers · asked by MEB 2

At a certain temperature the reaction

SO2Cl2 → SO2 + Cl2

is a first order reaction with t1/2 = 153.0 x 102 sec

What is the rate constant for this reaction (1/sec) ?


Enter a numeric answer only, do not include units in your answer

2007-02-05 05:51:02 · 2 answers · asked by geebgeebgeeb 1

ok how would you designate the hybrid orbitals formed by the mixing of one d one s and 2 p orbitals ???? and how many of the hybrid orbitals would be formed by the mixing?

2007-02-05 05:44:24 · 2 answers · asked by cutie pie! 3

Is there a formula for this?

2007-02-05 05:41:33 · 2 answers · asked by Anonymous

Question: What is the strongest interparticle force in each substance? (a) H3PO4 (b) SO2 (c) MgCl2

My Approach:
(a) hydrogen bonding
(b) dipole-dipole
(c) dispersion forces

these kinda questions throw me off. appreciate all the help i can get!

2007-02-05 05:18:46 · 6 answers · asked by Jimmy 3

Question: Rank the following in order of decreasing surface tension at a given temperature, and EXPLAIN your ranking:
(a) CH3OH (b) CH3CH3 (c) H2C(double bond)O

My Approach:
CH3OH, H2C(double bond)O, CH3CH3 --- My ranking

isn't it lesser surface tension when there is a Dispersion (London force)?

2007-02-05 05:17:57 · 1 answers · asked by Jimmy 3

For the reaction

H2(g) + CO2(g) H2O(g) + CO(g)

at 700°C, Kc = 0.520. Calculate the number of moles of H2 that are present at equilibrium if a mixture of 0.270 mole of CO and 0.270 mole of H2O is heated to 700°C in a 10 L container.

Thanks!!

2007-02-05 05:17:19 · 1 answers · asked by Anonymous

Question: Of the five major types of cyrstalline solid, which does each of the following form: (a) cholesterol (C27H45OH) (b) KCl (c) BN?

My Approach:
(a) molecular solid
(b) ionic solid
(c) molecular solid

2007-02-05 05:16:30 · 2 answers · asked by Jimmy 3

2007-02-05 05:11:40 · 1 answers · asked by Mike 2

2007-02-05 05:11:02 · 5 answers · asked by LuckyLady 1

what is the magnitude of the freezing point depression of benzoic acid caused by the addition of 0.010 mole of solute!!???

2007-02-05 05:05:19 · 1 answers · asked by MEB 2

How would you make a one molar solution? How about a 100mM solution?

2007-02-05 04:38:36 · 4 answers · asked by Anonymous

2007-02-05 04:37:38 · 1 answers · asked by Anonymous

2007-02-05 04:30:04 · 2 answers · asked by Anonymous

2007-02-05 04:28:34 · 2 answers · asked by Claire S 1

2007-02-05 04:16:07 · 11 answers · asked by H F 1

food dye chromatography experiment

2007-02-05 04:11:22 · 4 answers · asked by Anne L 1

2007-02-05 03:44:28 · 3 answers · asked by Anonymous

I have a science project involving making your own crystals, and I've done everything, but labeled my Sugar and Epsom Salt crystals with thier structure. I cannot find their structure on the internet, does anybody know the structure of Sugar and Epsom Salt?

2007-02-05 03:43:29 · 3 answers · asked by ImSpartacus 2

2007-02-05 03:43:07 · 8 answers · asked by Anonymous

2007-02-05 03:39:39 · 4 answers · asked by Anonymous

2007-02-05 03:39:27 · 3 answers · asked by stardust6547 2

2007-02-05 03:37:50 · 2 answers · asked by Anonymous

We have never thought of it, but it is actually very unstable. When you add acids, it becomes acidic really quickly and easily..
Why?Could the answer be polarity? Why when you add alkaline / acid it follows the change so easily

2007-02-05 03:33:26 · 2 answers · asked by jon 2

2007-02-05 03:29:47 · 6 answers · asked by pvr_patel 1

In the plot of a book that I’m currently working on, an evil corporation dump something into a local reservoir, making the water acidic and killing the local wildlife. Is there a nasty, dangerous chemical which is normally a solid/powder which would react in rainwater to produce an acid? In addition, I was thinking of having them dump Tritium Oxide, radioactive ‘heavy’ water which is naturally occurring in small quantities, but used by companies as a tracer in biological studies (and presumably pretty nasty as it’s radioactive!). I’m assuming that since it occurs in water naturally, dumping more of it in would be feasible. Any idea?

2007-02-05 03:25:01 · 2 answers · asked by patrgol 1

It sounded good in the book, but I didn't know if any there were any actual science theories on this, or if it is pure fiction. Either way, I recomend the book.

2007-02-05 03:20:52 · 1 answers · asked by Anonymous