Chemistry - November 2006

2006-11-11 05:17:09 · 3 answers · asked by Anonymous

Of these reactions, which one(s) is a combustion reaction?

1) CuSO4 + Fe

2) CuCO3 + heat

3) Mg + H2SO4

4) KI + Pb(NO3)2

5) Cu + AgNO3

6) CuSO4 x 5H2O + heat

7) Mg + heat

8) H20 + elec

2006-11-11 05:06:22 · 1 answers · asked by chenying702 1

I have been trying to draw this lewis structure for a few hours, and c an't get it for the life of me. I know Cl has 7 valence electrons, and O has 6. And ClO3 has a negative charge, but I can't draw it. Please help!

2006-11-11 05:00:26 · 5 answers · asked by Anonymous

2006-11-11 04:32:49 · 7 answers · asked by Dhruv 2

2006-11-11 04:22:24 · 6 answers · asked by Lindsay A 1

2006-11-11 04:19:31 · 7 answers · asked by Lindsay A 1

2006-11-11 04:18:41 · 5 answers · asked by Lindsay A 1

For example, a solution of sodium acetate (the corresponding acid is acetic acid) is basic. Why?

2006-11-11 04:14:43 · 4 answers · asked by lisat2yr 1

a) acid
b) base
c) oxidizing agent
d) reducing agent

2006-11-11 04:14:34 · 2 answers · asked by JESSE H 1

2006-11-11 04:12:56 · 2 answers · asked by lisat2yr 1

2006-11-11 04:11:13 · 6 answers · asked by JESSE H 1

Would you expect the chemical behaviors of these elements to be similar

2006-11-11 04:09:19 · 2 answers · asked by lisat2yr 1

how can we prepare 300 ml of a 2m nacl solution?

can somebody outline all the steps i have a test next week and i don't know how to do these types of question?

2006-11-11 04:02:00 · 2 answers · asked by lab h 1

In the simple experiment where you stick an iron nail and a copper coin in a potato to make a cell, it is obvious that the further apart the two metals are in the electrochemical series, the greater voltage will be prduced (i.e. lead and copper together would be really bad, iron and copper is better etc.). But what difference does it make to switch the potato for a lemon? Does this have any effect on the voltage produced by the cell?

2006-11-11 03:50:48 · 6 answers · asked by Rich 5

2006-11-11 03:48:15 · 2 answers · asked by luckyplaya23 2

2006-11-11 03:24:39 · 6 answers · asked by nandini s 1

Are there any formulators out there that have any ideas on putting together a cleaner that removes carbon (baked on grease) from an aluminum pan without attacking the meatal itself?? Ive been thinking about this problem for a while and would appriciate any ideas you guys might have. Thanks

2006-11-11 03:14:19 · 2 answers · asked by chemhead102 2

2006-11-11 02:52:20 · 2 answers · asked by luckyplaya23 2

I mean, where is it obtained on earth for industrial use?

2006-11-11 02:39:02 · 6 answers · asked by tuthutop 2

2006-11-11 02:38:12 · 19 answers · asked by aanchal g 1

2006-11-11 02:33:46 · 2 answers · asked by luckyplaya23 2

For homework, i have to get a stone, put it in a container, then have the container stink. What are some ways in which i can make the container stink without having to use a stink bomb? OR is there a way to put something on the stone that can make it stink? Is there some form of liquid that stinks? IS there a stink that smells good and bad at the same time?

And dont give me an answer with synonyms of poop, especially the ones that are not permitted in yahoo answers. i will not use poop smell anyway.

2006-11-11 02:07:46 · 6 answers · asked by alexkidd86 2

this water based wall putty is used for application on walls made of cement and bricks

2006-11-11 01:32:12 · 1 answers · asked by aswinnwakk 1

2006-11-11 00:22:46 · 1 answers · asked by King D 1

if ionisation energy is the name given to the energy required for an electron to completely escape the last shell of the atom, is it possible to obtain a high enough ionisation energy that liberates ALL the electrons from an atom? if so, wat is such an atom without any electrons called?........and wat is the ionisation energy for such an electron devoid atom?

2006-11-11 00:13:52 · 3 answers · asked by amandac 3

2006-11-11 00:07:31 · 5 answers · asked by Sheila M 1

2006-11-10 23:40:09 · 1 answers · asked by joy 1

we have three-hundred, 450 pound men, cruising down the hi-way in a bus going 190 miles per hour, if one of these men moons an oncoming car and slows the bus down to 150 miles per hour for 1 minute, what would the average speed of the bus be over a 200 mile course???

2006-11-10 20:31:37 · 4 answers · asked by bigschwinger 2

Suppose you have a sample of sucrose that appears to rotate plane polarised light 90 degrees dextrorotatory. How would you know for sure that the solution is not rotating the plane polarised light by 270 degrees levorotary?

2006-11-10 20:30:13 · 4 answers · asked by Anonymous

2006-11-10 20:24:29 · 4 answers · asked by mask 1