Chemistry - March 2007

And I would be grateful if u can tell me what it is used for. Thanks for your help!

2007-03-16 23:17:45 · 6 answers · asked by happy_ger 1

I have a metal detector that detects nonferrous objects very well, are all metals including gold nonferrous??

2007-03-16 23:17:41 · 5 answers · asked by Anonymous

The structures of two compounds and the measured approximate ratio of 1H-NMR spectrum signal areas for one of the compounds are shown on the left.

Select which compound was responsible for the 1H-NMR spectrum.



Ratio of 1H-NMR spectrum signal areas = 33:33:33
1,3-cyclopentdiene
or
pentane


Ratio of 1H-NMR spectrum signal areas = 43:29:29
1-florocyclohextriene
or
hexane

2007-03-16 23:17:22 · 2 answers · asked by Anonymous

I meen what hapens with moleculas that thay become suitble for eating.
Thanks

2007-03-16 23:16:13 · 1 answers · asked by lenok_03 1

When two isomeric alkenes are obtained in the ____a____ -catalysed _____b_____ of an alcohol, the ____c____ stable alkene (ie the isomer with the _____d_____ number of substituents on the double bond) generally predominates.
That is, the reaction follows _____e_____ rule.

2007-03-16 23:06:18 · 4 answers · asked by Anonymous

Which is the correct magnetic property for each of the nuclei below

-behaves like a tiny magnet
-imposible to decide
-doesnt behave like a tiny magnet


20 Ne
10

7 Ni
3

28Si
14

2007-03-16 22:51:31 · 1 answers · asked by Anonymous

Will 1° alcohols or 3° alcohols react more rapidly with aqueous hydrogen halides to form haloalkanes.

2007-03-16 22:45:01 · 1 answers · asked by Anonymous

IM me to discuss it plz
missitalian_9@yahoo.com

2007-03-16 20:40:17 · 2 answers · asked by Cinderella 3

2007-03-16 19:58:01 · 10 answers · asked by chrissy 1

Can't find any where that sells it. Does any one know where to buy it or if maybe there's an alternate name for it??

2007-03-16 19:35:18 · 2 answers · asked by cas1025 4

If there is a membrane with a high concentration of H+ on the left, and a lower concentration on the right, with a H+ pump maintaining this; would the polarity of molecules on the right of the membrane be affected? I've searched on Google but nothing seems to come up. Thanks for your help!

2007-03-16 19:29:17 · 4 answers · asked by Anonymous

2007-03-16 19:27:14 · 2 answers · asked by christaglo 2

What are the average bond orders in the following molecules or polyatomic ions? Cl2- Emphasize the completion of the octet rather than any minimization of formal charge. Enter your answers as a sequence of numbers (one decimal place) separated by commas (for example, 1.3,1.0,1.5,2.0,3.0).
A) SO3
B) XeF4
C) Cl2
D) CN-
E) NO2-

can u help me with this review problem?
tnx best answer gets best answer.

2007-03-16 18:12:54 · 1 answers · asked by Anonymous

How can i identify which is alpha hydrogen and which is beta hydrogen?give me example.

2007-03-16 17:41:52 · 2 answers · asked by star123 2

Why alloy can prevent corrision?
I know that Chromium atoms are added among Iron atoms.
But how can they appear on the surface of the Iron in the oxide form to prevent corrision?

2007-03-16 17:13:43 · 1 answers · asked by Anonymous

2007-03-16 16:56:29 · 6 answers · asked by qwerty u 1

This is a easy and fast one

2007-03-16 16:50:05 · 14 answers · asked by qwerty u 1

-How does the no. of carbon atoms affect melting point??

-Write the general formula of fats and oils? How does one differ from the other in terms of structure?

-Is it true that fats from animal sources are saturated while those from plant sources are unsaturated? Which is better as food source? Discuss the claim that virgin coconut oil has health benefits. How is margarine made? Is it a better substitute for butter?

2007-03-16 16:36:25 · 3 answers · asked by inquiringmind 1

i think i am doing it right, just not sure....
(g) acetyene (C2H2) reacts w/ oxygen (g) to form (g) carbon ioxide and (g) water. can someone please tell me if im on the righ track?????? PPPLLLEEEAASSE!

C2 H2 (g) + 5O (g) -> 2CO2 (g) + H2O (g)
i know im supposed to end w/balancing sides. this shows me i have 2-C, 2-H and 5- O on both sides, right???

2007-03-16 16:18:56 · 5 answers · asked by claudia 1

2007-03-16 16:14:43 · 5 answers · asked by krysdizzle_2006 1

2007-03-16 16:07:54 · 2 answers · asked by hh17 1

2007-03-16 16:00:46 · 3 answers · asked by tia 1

2007-03-16 15:50:46 · 2 answers · asked by sikhism4life88 1

what kind of things should i research on about alternative fuels? pls help, thanks.

2007-03-16 15:48:13 · 7 answers · asked by happy_ger 1

0.540 M NH4Cl ( use Ka = 5.60 x 10 -10 ) and 0.540 M NH3.

2007-03-16 15:29:39 · 1 answers · asked by Gemini 2

2007-03-16 15:20:22 · 6 answers · asked by Cindy B 2

How many moles of Fe(OH)2 [Ksp=1.8x10^-15] will dissolve in one Liter of water that has been buffered at pH=12.00?

2007-03-16 15:19:28 · 1 answers · asked by Anonymous

2007-03-16 15:13:57 · 5 answers · asked by Cindy B 2

2007-03-16 15:05:05 · 4 answers · asked by Cindy B 2

1. What happens in a chain reaction? What role do neutrons have in a chain reaction?

2. Why is pure uranium-235 needed for a chain reaction?


3. Why is a large mass of uranium-235 needed for a chain reaction?

2007-03-16 14:58:09 · 6 answers · asked by cult_king_666 1