Chemistry - September 2007

2007-09-22 09:10:05 · 3 answers · asked by Anonymous

Classify steel and explain your reason... thanks...

2007-09-22 09:03:12 · 4 answers · asked by Juan C 6

Elemental ananalysis of a compound results in the following data

41.39 % C
3.47 % H
55.14 % O

What is the empircal formula of this compound ?

2007-09-22 08:40:56 · 4 answers · asked by mike m 1

And what would happen if you then dropped boiling mercury into liquid nitrogen ?

2007-09-22 08:29:29 · 6 answers · asked by Cyclops 5

2007-09-22 08:21:14 · 3 answers · asked by Anonymous

2007-09-22 08:16:52 · 3 answers · asked by Ridicolous 1

when salt is added to water it takes a longer time for the water to boil.

what can you conclude about the effect of salt on water?

2007-09-22 08:04:23 · 2 answers · asked by .:.:AODO4EVER2014:.:. 2

how many...
protons__
neutrons__
electrons__

thanks

2007-09-22 07:59:35 · 1 answers · asked by Anonymous

A pycnometer with a mass of 51.46 g when empty, has a mass of 97.77 g when filled with water (density = 1.000 g/mL), and a mass of 82.03 g when filled with liquid C.

What is the volume of the pycnometer?

What is the density of liquid C?

2007-09-22 07:54:22 · 1 answers · asked by jacobswilson 2

I know that all chemical equations must be balanced for example C2H5OH+ 25 O2==> 16 CO2+ 18 H2O but suppose i m doing an expirement and i put ONLY one mole of C2H5OH+ one mole ofO2 what would i get as products? is there would be any reaction?

2007-09-22 07:54:06 · 2 answers · asked by zoozy 1

2007-09-22 07:52:30 · 2 answers · asked by Anonymous

If pH = -log[H+] then does that mean that the pH for this CH3COOH 1.0M solution is 0? Thanks.

2007-09-22 07:50:52 · 2 answers · asked by Anonymous

2007-09-22 07:48:56 · 2 answers · asked by Mike c 1

can you help me identify the following,,,?

1.) salad dressing
2.) motr oil
3.) pancake syrup
4.) marbel chips
5.) paper towel
6.) coal
7.) glass
8.) sand
9.) wood
10.) salt water

and can you tell me your reason why?

2007-09-22 07:24:36 · 1 answers · asked by Juan C 6

NaCl
C12H22O11
C2H3OH
I2
NaHCO3
CuCl2
H2O

2007-09-22 07:17:47 · 2 answers · asked by Caramel 2

NaCl (Table salt)
C12H22O11 (Sugar)
C2H3OH (Alcohol)
I2
NaHCO3
CuCl2
H20

Thanks a lot...

2007-09-22 07:16:30 · 1 answers · asked by Caramel 2

what is the best electrolyte in electrolysis of water
can we use any electrode in " " "
which type of water is requred hard or soft

2007-09-22 06:39:55 · 3 answers · asked by 007dragoon 1

What is the correct number of sig figs for -88.0 - 273 = -361

2007-09-22 06:33:25 · 4 answers · asked by Anonymous

Formula is aqueous

MgI(subscript 2) and AgNO(subscript 3)

2007-09-22 06:22:16 · 2 answers · asked by Anonymous

Is air a solution or solvent because of the water vapours. Or a mixture of compounds. What ever it is please explain why.

2007-09-22 06:10:11 · 3 answers · asked by fred 1

2007-09-22 05:53:45 · 2 answers · asked by Kip 1

2007-09-22 05:42:36 · 13 answers · asked by Anonymous

Also what makes up electricity?

2007-09-22 05:40:19 · 2 answers · asked by Jenny G 1

this is a chemistry question

2007-09-22 05:37:01 · 2 answers · asked by Anonymous

If you can explain how to do these step by step that would be great
K2CrO4 + Pb(NO3)2 -------> ?
and
(NH4)2CO3 + HNO3-------> ?

Also if you can check to make sure that these are right would also be greatly appreciated

1)NaCl + AgNO3 ------> NaNO3 + AgCl
2)BaCl2+ H2SO4 -----> BaSO4 + HCl2
3)NaOH + HCl --------> NaCl + H2O
4)Na2CO3 + HCl ---->Na2Cl + HCO
5)H2SO4 + NH4OH --> H2OH + SO4NH4
6)FeCl3 + NH4OH -----> FeOH+ NH4Cl3
7)Na2SO3 + HCL ------> Na2Cl + SHO3

2007-09-22 05:33:33 · 2 answers · asked by evilshenanegans 1

If air is 78% nitrogen and about 21% oxygen, with the remaining 1% a mixture of various trace gases, then what is it? Can you please explain why it is a compound or homogeneous mixture or heterogeneous mixture.

2007-09-22 05:32:50 · 5 answers · asked by fred 1

Can a car get melted at that temperature?
what about other stuff like minerals (gold..)?

2007-09-22 05:31:16 · 5 answers · asked by ShaDoW 2

2007-09-22 05:22:31 · 4 answers · asked by tons'o'fun 3

many thanks.

NirvanaGal

xxxxxxxxxx

2007-09-22 05:19:15 · 12 answers · asked by Anne Nonny Mouse 4

plz help..thanks

2007-09-22 05:14:17 · 6 answers · asked by HRF2013 2