Chemistry - December 2007

a) 1,2-ethanediol b) 2-butanol c) 3-pentanol d) 2,3-butanediol e) ethanol

2007-12-25 12:09:31 · 2 answers · asked by Anonymous

i need examples of square pyramidal molecules!! i already have IF5 and BrF5., but i need more. PLEASE answer ASAP!

2007-12-25 12:04:32 · 3 answers · asked by xx528 1

2007-12-25 11:09:59 · 2 answers · asked by Angi 1

A 2.1347g of Na3RhCl6.12H2O was dissolved in 500cm3 of water

a) calculate the concentration of Na in the solution in mol dm-3

b) calculate the concentration of Rh in the solution in ppm

2007-12-25 11:07:14 · 1 answers · asked by koy2478 1

2007-12-25 09:43:34 · 7 answers · asked by Shellshock 2

2007-12-25 09:15:46 · 1 answers · asked by popfly4mat 1

5^4√256x + 5^4√81x

2007-12-25 04:41:07 · 2 answers · asked by Marcia O 1

Plz help or else Im dead

2007-12-25 00:11:41 · 3 answers · asked by Anonymous

1) Alpha,Beta and Gamma Rays show different order of penetration power.
2) X-rays are also called as Anode rays
3) There is a direct correlation between X-rays and the atomic numbers.
4) Cathode rays exhibit the e/m ratio constant.
5) Line spectrum is considered as the finger print of the atoms af an element.

2007-12-24 21:13:33 · 2 answers · asked by Anonymous

is it because its that not so reactive?

2007-12-24 20:24:30 · 1 answers · asked by carol jane r 1

how do u noe if H2O appears as liquid state or gaseous state in a reaction, if it is formed as a product?

2007-12-24 18:56:57 · 4 answers · asked by blahhs 1

this is a question my tcher gave me: NO2 has an unpaired electron on its Nitrogen atom. suggest its shape? but shoudnt it be NO2-?

2007-12-24 18:45:11 · 2 answers · asked by blahhs 1

1) CH4
2) CH3CL
3) CH2CL
4) CHCL3
5) CCL4

2007-12-24 18:43:49 · 2 answers · asked by Anonymous

i was wondering if there''ll be any reactions going in between BF3+NaF? since they both contain the same anion, if they do 'exchange anions and cations', wouldnt the product be the same? so is it right to say that as long as the cation/anion of two molecules is the same, no reaction will occur? eg between HCL and H20?

2007-12-24 18:38:31 · 2 answers · asked by blahhs 1

How do i find the limiting reagent in a lab? its for chemistry!

2007-12-24 16:36:06 · 2 answers · asked by βεαuτy ♥ 4

The books example of this really sucks because I can't comprehend it like I could with emprical formulas. I have 2 questions on this Section Review where I have to find Molecular formula so I'll write one of the problems and I'm hoping someone could explain it with the answer so I can do the 2nd one on my own?

If 4.04 g of N combine with 1.46 g O to produce a compound with a formula mass of 108.0 amu, what is the molecular formula of this compound?

Sorry, Chemistry has not been good to me this semester :( Parts I understand and parts I don't so I made sure next semester I'm in Biology because I'm better with memorizing than I am with math and stuff for Chemistry.

2007-12-24 16:07:59 · 4 answers · asked by Anonymous

My brother said that it was salt. I need to use it to make ice for a party. Please tell me!!!!!!

2007-12-24 15:47:59 · 10 answers · asked by Anonymous

Calculate the amount (in mole) of:
1. Cl^- ions in 13.4g of nickel chloride(NiCl2)

2. O^2- ions in 159.7g of iron(iii) oxide (Fe2 O3)

Thanks

2007-12-24 14:57:01 · 4 answers · asked by Silver L 1

I need a bit of help with solving a hydronium ion concentration problem.
I need to find the ion concentration of a solution that's 1.5 molar acetic acid and .20 molar sodium acetate.

If possible, could you explain how you got this answer so I can understand a bit better about how you came to this conclusion. Thanks.

2007-12-24 12:37:34 · 2 answers · asked by Anonymous

what other things contain inert gases and what gas?

2007-12-24 11:00:16 · 7 answers · asked by Lorr C 1

2007-12-24 09:47:34 · 4 answers · asked by paragon 1

Hydrochloric acid can be produced by reacting silicon tetrachloride with water. Silicon dioxide is also produced.

a. Write the balanced chemical equation for this reaction.
I wasn't sure on this, I actually wanted an example and explanation. I guessed: SiCl4 + H2O --> HCl + SiO2

b. Why would it be incorrect to write an ionic equation for this reaction? (I don't know why it's incorrect)

2007-12-24 09:29:12 · 3 answers · asked by ♥ 3

Especially those with a smell.

2007-12-24 08:27:08 · 4 answers · asked by Roy Nicolas 5

Why does adding vinegar cause the protein in milk to curdle? Please explain in detail.

2007-12-24 08:18:07 · 7 answers · asked by Anonymous

Like i want some type of acid like battery acid. Will it burn the bottle that its in?(glass)???

2007-12-24 07:07:08 · 6 answers · asked by Anonymous

2007-12-24 06:42:47 · 2 answers · asked by Anonymous

2007-12-24 06:37:56 · 9 answers · asked by Gaje S 1

Basically im confuzzled on how to solve problems that involve Wet Gases and then turning them into dry gases and then asnwering questions about them..

For example they give you:
a 1.6 sample of KClO3 is heated and reacts in thsi way
they give you a reaction
Then they say what is the volume of oxygen collected over water at 26C and 740Torr.....

Like how would u go about doing that...No i am not looking for the answer, simply how to solve it....I kidna wasn't paying attention in class lol

2007-12-24 03:03:30 · 2 answers · asked by The Book Smart Game Freak 3

if the substances are:
HCI,NaOH,KCI,HF,NH3,CsOH,Sr(OH)2,H3PO4,BabR2,CH3COOH,CH3NH2
how each substances disite are strong electrolyte and weak electrolyte?

2007-12-24 01:51:48 · 4 answers · asked by maria 1

Write down an equation for the concentration-based equilibrium constant (kc) and hence deduce the units of the constant for this reaction system.

2007-12-24 01:08:28 · 3 answers · asked by Jerome D 1