Chemistry - February 2007

The reactants are: Copper sulphate formula CuSO4
Iron formula Fe
Any help would be really appreiciated, as it is part of my science coursework, i checked all over the internet, but i'm struggling to find out which is the correct one.

2007-02-02 22:45:30 · 4 answers · asked by Anonymous

simple method

2007-02-02 22:13:23 · 3 answers · asked by bhoo 1

plz answer, this is a homework---hehehe

2007-02-02 21:58:32 · 9 answers · asked by lfc_kilo 1

2007-02-02 20:14:00 · 9 answers · asked by roselle m 1

2007-02-02 20:10:42 · 3 answers · asked by roselle m 1

2007-02-02 18:44:50 · 3 answers · asked by sonakshi a 1

2007-02-02 18:00:08 · 7 answers · asked by ingham135 1

it shud not be dangerous...i.e. not highly inflammable..

2007-02-02 17:40:12 · 4 answers · asked by Dhruv 1

2007-02-02 17:28:24 · 9 answers · asked by Doogie 1

2007-02-02 17:20:49 · 4 answers · asked by handsome 2

how do i balence boron triiodide

2007-02-02 17:00:58 · 2 answers · asked by Anonymous

why don't we use tanks of gasoline and a separate machine capable of isolating pure oxygen to create high powered combustion in chambers to power a traditional style internal combustion engine (obviously modified to handle the greater pressure)?

2007-02-02 16:49:59 · 3 answers · asked by K9 Guy 2

To create energy? For example, a FCV needs hydrogen tanks. Can we make a machine that can pull the hydrogen from water and store hydrogen that way? Would the energy made from the FCV engine be greater than the energy required to pull the hydrogen from the water?

2007-02-02 16:28:48 · 6 answers · asked by K9 Guy 2

2007-02-02 15:59:14 · 7 answers · asked by esha 1

2007-02-02 15:53:09 · 3 answers · asked by jcpara9 1

#1.
A student adds 4.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry ice sublimes (converts to gaseous CO2)?
#2.
As(s) + O2(g) ----> As2O5(s)
Consider the above unbalanced equation. What mass of arsenic is required to react with 705 mL of O2 at 465 mm Hg and 35.5°C? Use molar masses with at least as many significant digits as the data given.
#3.
C6H6(l) + O2(g)-----> CO2(g) + H2O(g)
Consider the above unbalanced equation. What volume of O2 at 940. mm Hg and 93.5°C is required to produce 125 mL of CO2 at 910. mm Hg and 44.5°C?
#4.
The rate of diffusion of methane gas, CH4, is four times the rate of diffusion of an unknown gas under the same conditions of temperature and pressure. What is the molar mass of the unknown gas? Enter your answer to 3 significant figures.
#5.
A student adds 4.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry ice sublimes?

2007-02-02 15:47:15 · 2 answers · asked by Anonymous

2007-02-02 15:44:38 · 2 answers · asked by oremyra 2

2007-02-02 15:36:57 · 5 answers · asked by Ilene L 1

How to know if it is pure?

2007-02-02 15:32:06 · 3 answers · asked by Flongkoy 2

If the outside of a test tube is not dried after vaporizing the liquid, will the molar mass of the compound be too high or too low?

2007-02-02 15:04:17 · 3 answers · asked by Anonymous

The wavelengths of X-rays are much shorter than those of ultraviolet or visible light. Show QUANTITATIVELY why continued exposure to X-rays is more damaging than exposure to sunlight.

2007-02-02 14:56:58 · 3 answers · asked by RickySingh2006 2

how does it get all the dirt off my hands?

2007-02-02 14:54:50 · 4 answers · asked by 킹세븐 2

2007-02-02 14:51:33 · 4 answers · asked by CR7 3

I read in a sci-fi novel that if one end of a tungsten rod is heated, and the other is chilled, there will be an apreciable electical current along the length. And, with a very, very large beam of tugsten, you can sink one end in a deep body of water, put the other end in a green house on the surface, and draw off the current by a wire in the middle. Voila! "Free" energy.

Of course, i have no idea if this is even vaguely factual. That's where you come in.

2007-02-02 14:33:42 · 2 answers · asked by juicy_wishun 6

When the boiling point of a substance becomes lower becuase of certain chemical change in its structure, does it necessary mean its freezing point would go lower as well? Thanks for answering !!

2007-02-02 13:55:19 · 4 answers · asked by edbiology 1

1. does it have a latin name? if so what?

2. explanation about name e.g. was the elemet known by another name?)

3.atomic structure (Electron shells, Protons Neutrons) Label needed

4. chemical symbol

2007-02-02 13:47:52 · 2 answers · asked by ♥Roberta. 5

2007-02-02 13:31:45 · 4 answers · asked by ortheother 1

lets see what everyone can come up with i got a few in mind. plz provide more then 2

2007-02-02 13:23:39 · 1 answers · asked by acer_junior 2

2007-02-02 13:20:25 · 5 answers · asked by Anonymous

how do i convert L into mol

for example 0.3L water in mol

2007-02-02 13:00:41 · 2 answers · asked by Anonymous