Chemistry - November 2006

2006-11-23 10:45:53 · 17 answers · asked by Anonymous

2006-11-23 10:43:28 · 28 answers · asked by kiedokl 2

Please help im so miffed by this question!

A 1g sample of Hexane was burned completely in Oxygen using EXACTLY double the volume of Oxygen required bt the stoichemetric equation. The resulting gas mixture was collected in a container over water. Calculate the volume of this gas mixture at 20 degrees celsius and 100.5kPa pressure, includind a correction for the vapour pressure of water which is 2.3kPa at 20 degrees celsius.

2006-11-23 10:36:15 · 3 answers · asked by Stevie B 2

2006-11-23 10:30:10 · 3 answers · asked by morpheus2485 1

this is a science fair project, and i heard from many people that its nice. I have done some research but it's not that helpful! Im counting on people to help me! Thanxs!

2006-11-23 10:18:50 · 11 answers · asked by Star 2

I know that a ketone will result from a reaction of a 2 degree alcohol with PCC and that aldehyde will result from a reaction of 1st degreee alcohol with PCC. But will Ketone, or neither ketone/aldehyde result from a reaciton of a third degree alcohol with PCC? Why? Can someone explaing it to me... thanks

2006-11-23 09:52:34 · 2 answers · asked by AUNIDLY 1

In a lab testing the reactions of catalase (enzyme formed in the liver tissues), what are the main purposes of crushing the liver with sand? What does it do to the reaction rate?

2006-11-23 09:48:17 · 4 answers · asked by abc2612546 2

hey, i'm doing this chemistry project for my assignment, and i would really need to find a table of chemical potential of elements/chemical equations. i've been searching for one for hours, just cant find any. any ideas please?

2006-11-23 09:27:40 · 2 answers · asked by scoobydoobydoo 1

2006-11-23 09:21:15 · 3 answers · asked by ... 1

2006-11-23 08:58:42 · 2 answers · asked by schoolgirl 1

i dont understand it at all and i have to do a project figuring how many moles of something it takes to go around the earth or something like that but i don't understand what im supposed to do at all and im about to cry...haha its annoying i hate this!

2006-11-23 08:49:35 · 6 answers · asked by gradin_2007 1

Explain the following: You add 100 mL of water to a 500-mL round-bottom flask and heat the water until it is boiling. You remove the heat, stopper the flask, and the boiling stops. You then run cool water over the neck of the flask, and the boiling begins again. It seems as though you are boiling water by cooling it.

2006-11-23 08:33:05 · 2 answers · asked by Anonymous

Answers in plain basic english cus im very confused at the moment. Thanks

2006-11-23 08:26:00 · 4 answers · asked by Perfect-Angel84 2

Question i have is: This experiment qualitatively analysed for component dyes. Explain what this means.

Please help i missed the class and dont understand. Can anyone answer this for me in basic plain english?

2006-11-23 08:23:38 · 2 answers · asked by Perfect-Angel84 2

Knowing that there are 20 drops of water in a ml. How many atoms are there is a drop of water?? ATOMS! Not molecules!

2006-11-23 08:06:00 · 6 answers · asked by Sasuke 2

2006-11-23 08:00:04 · 3 answers · asked by Anonymous

2006-11-23 07:59:19 · 4 answers · asked by Anonymous

2006-11-23 07:58:45 · 2 answers · asked by Anonymous

combustion, cracking, fractional distillation, reduction, reforming?

2006-11-23 07:30:12 · 13 answers · asked by Anonymous

I'm doing a powerpoint presentation for my chemistry class on the element aluminum of the periodic table. I need to know things such as its average atomic mass, most abudant isotope mass number. listing of all technical data. something wierd or unique about it. latin root or word. common uses. sources. appeareance. its history.

2006-11-23 07:27:57 · 5 answers · asked by marymageret 1

2006-11-23 07:24:09 · 13 answers · asked by Anonymous

Why should you heat the upper portion of the liquid rather than the bottom? This is with the use of a test tube...

2006-11-23 07:18:03 · 2 answers · asked by mysterio 1

I just have few concept questions that i am alwasy confused and need some clarification..

Will a "ketone or aldehyde" yield a 2nd degree alcohol when reacted with Grignard reagent followed by an acid workup.

Will a "ketone or aldehyde" yield a 2nd degree alcohol when reacted with H2 in the presence of a metal catalyst.

Will a "ketone or aldehyde" yield a 2nd degree alcohol when reacted with LiAlH4 followed by an acid workup.

2006-11-23 07:01:44 · 3 answers · asked by AUNIDLY 1

We did a flame test in Chemistry. One of the follow up questions is : "All of the salts were compounds of nitrates. What effect did the nitrates have on the color emission? Explain."

any1 knoo?

2006-11-23 06:57:58 · 3 answers · asked by Anonymous

i have to make a model of a periodic table of elements what can i use?

2006-11-23 06:41:25 · 3 answers · asked by mishoney 4

2006-11-23 06:29:14 · 6 answers · asked by Anonymous

i need to research on this before December 5th
and i need your help.

2006-11-23 06:02:58 · 15 answers · asked by jasmine c 1

Do you know the parts and functions of each part of a gas burner? Especially the gas inlet and the nozzle hole or gas spud? And, I noticed the nozzle hole is very much smaller, why was that so? please I need you help...

2006-11-23 06:02:15 · 1 answers · asked by mysterio 1

2006-11-23 05:56:54 · 9 answers · asked by Gym Girl 2

2006-11-23 05:41:39 · 9 answers · asked by KMM 1