Chemistry - January 2007

can anyone tell me the methode of preperation .

2007-01-07 15:19:30 · 9 answers · asked by ANIRBAN B 2

2007-01-07 15:13:29 · 2 answers · asked by mkaamsel 4

What is the Chemistry Geometry name for hydrogen, carbon dioxide, boron trihydride?

2007-01-07 15:04:16 · 3 answers · asked by mcsquare3245 2

preferrably more than one reason thank you =]

2007-01-07 15:01:17 · 5 answers · asked by im ur daddy 2

I need some help finding out what the Lewis Structure is for hydrogen, cardon dioxide, and boron trihydride.

Thanks for your help.

2007-01-07 15:00:45 · 1 answers · asked by mcsquare3245 2

What is the equation to find the percentage or error and percentage of yield? is that the same thing?

2007-01-07 14:58:37 · 1 answers · asked by *shy*earthangel* 1

ok i was doing a heat release question where i am given two molecules and the bond energies of each of their pieces and a reaction
i was asked to calculate the change in heat for the reaction
i found that the reactants side was 345 less than the products side
i know the formula says that i am to take the products side and subtract from the reactants side but explain to me how that makes logical sense
that would mean you get an answer reactants-products=-345
i knew this but i thought about it and i wrote +345 (i got it wrong) because if it were the other way that would mean that the reactants give up an amount of energy less than that which the products need to form and the reaction gives off energy this is impossible
(no free lunch rule)

how can u need more energy than u have and still give off energy
(energy is measured from the point of view of the system remember)

2007-01-07 14:58:15 · 2 answers · asked by dheeraj 3

does it bring the flavor out in food so well.

2007-01-07 14:49:35 · 2 answers · asked by rhino_man420 6

2007-01-07 14:40:02 · 3 answers · asked by Anonymous

2007-01-07 14:31:47 · 8 answers · asked by Raneisha R 1

2007-01-07 14:19:12 · 4 answers · asked by Dan 1

how do you convert 12.7 mol to molecuels. i thought you just multiply the mol by avagodros number but its wrong.

2007-01-07 14:08:32 · 8 answers · asked by imigeofinvsible 1

Please help!

2007-01-07 13:51:38 · 9 answers · asked by twistedangel 3

2007-01-07 13:33:56 · 6 answers · asked by Anonymous

and how much does it cost?

2007-01-07 13:30:09 · 5 answers · asked by Anonymous

I need it for my Science project due tomorow.
i have room temp water?
cold water
and
hot water


i am seeing if the temp of water affects the dissolving rate of sugar

2007-01-07 13:29:45 · 18 answers · asked by Anonymous

2007-01-07 13:09:50 · 5 answers · asked by Anonymous

CoCl(sub2) x 6 Water
Na(sub2)Co(sub3) x 10 Water

2007-01-07 13:01:34 · 3 answers · asked by Anonymous

2007-01-07 12:59:48 · 6 answers · asked by Oregano 1

using Subscripts like 1,2,3,4

2007-01-07 12:48:17 · 10 answers · asked by bennettalexander@sbcglobal.net 1

2007-01-07 12:46:44 · 9 answers · asked by Oregano 1

2007-01-07 12:45:38 · 2 answers · asked by sue e 1

My report is due on Wednesday January 10, 2007.

2007-01-07 12:42:25 · 1 answers · asked by xx 3

The numbers have to be equal on both sides of the equation

2007-01-07 12:36:10 · 8 answers · asked by bennettalexander@sbcglobal.net 1

2007-01-07 12:34:34 · 10 answers · asked by Briar 1

2007-01-07 12:00:02 · 4 answers · asked by stephen p 1

2007-01-07 11:38:06 · 3 answers · asked by rockinrobyn132000 1

P4+O2-->P4O10

please note: The numbers shown are subscripts.

2007-01-07 11:22:11 · 3 answers · asked by Captain705 1

how do i compare and contrast the structure of a molecule of benzene vs. carbon dioxide?

also bezene and methande have the same elements. what makes the compounds different?

2007-01-07 11:21:47 · 8 answers · asked by Anonymous

2007-01-07 11:13:32 · 5 answers · asked by darkorzbc 2