Chemistry - March 2007

i know that there is carbon dioxide (obviously) but o wasnt sure if there was anything else that it is in. does anyone know?

2007-03-22 11:05:43 · 4 answers · asked by katiepoo 2

2007-03-22 10:55:17 · 1 answers · asked by what ever ? 2

I cannot figure out the following questions:
MgCl2 + NaOH ==>
FeCl3 + NaOH ==>
Na2CO3 + HCI ==>
NH4Cl + NaOH ==>
I need to get their products and also balance them.

And I also need to know how to put the following two into decomposition reactions that lead to a formation of water and gas:
Na2CO3 + HCI ==>
NH4Cl + NaOH ==>


Thanks for all your help.
:)

2007-03-22 10:39:49 · 2 answers · asked by Anonymous

2007-03-22 10:35:33 · 1 answers · asked by Rebecca R 1

A 10.0-mL sample of 0.75 M CH3CH2COOH is titrated with 0.30 M NaOH. What is the pH of the solution after 22.0 mL of NaOH have been added to the acid? Ka = 1.3 × 10-5
5.75
4.94
4.83
4.02
3.95

2007-03-22 10:28:35 · 1 answers · asked by jennifer 2

A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid?
2.00
1.60
1.05
1.00
none of the above

plz show me work so i can understand, thanks in advance

2007-03-22 10:24:15 · 1 answers · asked by phong pham 2

I'm writing fiction and this is all they have available. Don't give me references on soapmaking. I just want to know which one would make a better, less objectionable product, because they need to make soap and that's all they have to work with. It's not just for bathing, but for clothes laundry.

Also, will petroleum saponify? I wouldn't think so, but I wanted to ask those who might know with certainty.

Thanks to all who answer.

2007-03-22 10:23:19 · 4 answers · asked by cdf-rom 7

What photon energy is required to excite an electron from the ground state to the n = 2 level in the Bohr hydrogen atom?

2007-03-22 10:21:32 · 2 answers · asked by Anonymous

chlorine
beryllium
magnesium
sodium
iron

? and how can you tell?

2007-03-22 10:19:19 · 13 answers · asked by corey 1

As, Na, Ga, Cs, Sb ??


& How do you tell?

2007-03-22 10:15:31 · 2 answers · asked by corey 1

2007-03-22 10:12:18 · 2 answers · asked by Anonymous

This is for a homework assignment. We have to find out why on the Periodic Table of Elements some of the elements have/did have 3 letters.. (ex. Unp, Unh, Uuu)

2007-03-22 10:10:29 · 1 answers · asked by meganrhea17 2

many supermarkets used to leave huge stacks of old cardboard boxes by the checkouts for costumers to use for their shopping.

why do you think this practise was banned on safety grounds?

2007-03-22 08:45:12 · 2 answers · asked by dudez 1

1)Does a photon with a high frequency has a long wavelength?

2) how do you determine an isoelectronic species from the periodic table?

2007-03-22 08:20:42 · 4 answers · asked by Anonymous

2007-03-22 08:19:50 · 5 answers · asked by Anonymous

In lamens very simple uneducated redneck terms... i need to know how to make HCI strong enough to dissolve iron. Please refraid from using words like cathtrode and HCi+4sr or w/e that is.. im not educated in this.. i just need a simple english way to make HCI strong enough to dissolve iron... duke_nukem4ever2000 is my yahoo id and im on if you want to message me .. will get best answer if i talk person to person :)

2007-03-22 07:36:00 · 3 answers · asked by Anonymous

I was trying to solve this using the VSEPR theory and I was not able to. I don't know if this is correct, but I believe there are 19 valence electrons. I know chlorine does not form multiple bonds with oxygen, so there has to be 2 bonded pairs with 7 lone pairs? and if there are 7 lone pairs, what happens to the extra valence electron not in a pair? I'm completly lost. Can anyone show me how the find the molecular shape (linear, trigonal planer, bent, tetrahedral, or trigonal pyramidal)?

2007-03-22 07:26:01 · 5 answers · asked by Anonymous

this seems wrong as i would think it would weight mush more. is she wrong and if so what is she thinking of because the number 22.4 does sound farmiliar.

i need a source otherwise she won't believe me

2007-03-22 07:22:16 · 6 answers · asked by Russel 1

2007-03-22 07:21:09 · 2 answers · asked by bigpapamarek 1

this seems wrong as i would think it would weight mush more. is she wrong and if so what is she thinking of because the number 22.4 does sound farmiliar.

i need the source otherwise she will not believe me

2007-03-22 07:20:13 · 2 answers · asked by Russel 1

2007-03-22 07:19:42 · 3 answers · asked by bigpapamarek 1

2007-03-22 07:17:35 · 2 answers · asked by bigpapamarek 1

why are bubbles formed when water is boiling and what are the bubbles composed of . A scientific answer is expected.

2007-03-22 07:09:58 · 6 answers · asked by Nahush P 1

this seems wrong as i would think it would weight mush more. is she wrong and if so what is she thinking of because the number 22.4 does sound farmiliar.

2007-03-22 07:09:35 · 12 answers · asked by Russel 1

What is done in a normal organic chemistry class?
Is it like general chemistry: where there is alot of math and a few definitions you have to memorize.
Or is it mostly memorization

2007-03-22 07:05:54 · 4 answers · asked by abc 2

2007-03-22 07:04:50 · 8 answers · asked by tuliip 1

Is there any acid what so ever that can dissolve iron?

2007-03-22 06:58:05 · 1 answers · asked by Anonymous

to use stoke's law, we have to determine the reynolds numbers of an object in the fluids... what is the conditions of reynolds numbers that will be statisfied to use stoke's law??

2007-03-22 06:51:21 · 2 answers · asked by Zacky I 1

Anybody can explain to me about the applications of drag coefficient in chemical engineers...

2007-03-22 06:31:19 · 2 answers · asked by Zacky I 1

2007-03-22 06:17:07 · 7 answers · asked by Anonymous