Chemistry - September 2007

2007-09-01 19:03:27 · 3 answers · asked by Bri-Bri 1

2007-09-01 18:59:40 · 11 answers · asked by monnica 2

2007-09-01 18:54:19 · 3 answers · asked by Anonymous

if u don't mind... can u please explain how to extract this acid from your given source

2007-09-01 18:53:53 · 1 answers · asked by mockingbird 3

Au is the chemical symbol for gold.

2007-09-01 18:47:15 · 3 answers · asked by Anonymous

so we just saw the invisible water effect on youtube and we want to do it but we do not know which gas to use. what gas do we use and what other materials do we need. For one last thing can you please give us the procedure in which to perform this experiment?

2007-09-01 18:30:34 · 4 answers · asked by Anonymous

it is the chips with fahrenheit

2007-09-01 18:28:40 · 2 answers · asked by russelle 2

Assuming a honeybee secretes 8.00×10^−12 of pure pheromone, how many molecules of pheromone are secreted?

2007-09-01 18:19:07 · 2 answers · asked by stranger 1

Is it correct that in sodium metallic bonding the minimum number of sodium atoms that can take part is 8?

2007-09-01 17:37:57 · 2 answers · asked by Gideon 1

What us the PH of sulphuric acid in the following concentrations:
- 0.05Molar
- 0.025 Molar
- 0.25 Molar
- 0.5 Molar
Thanks alot fot your help!!!

2007-09-01 15:17:23 · 5 answers · asked by Anonymous

Please show the solution.....Use the equation: 3Fe + 2O2--> Fe3O4...

2007-09-01 15:16:15 · 1 answers · asked by Anonymous

How the modern atomic theory changed sinced atoms were discovered?

2007-09-01 15:03:21 · 2 answers · asked by Javier G 1

a.-burette
b.-conical flask
c.-pipette
d.-drops on end of pipette or burette

2007-09-01 14:42:55 · 2 answers · asked by Anonymous

2007-09-01 14:39:23 · 2 answers · asked by hilanger23 1

why is it that, when i held the evaporation dish over the flame of a tirrell burner, the flame follows the dish where ever we move it?

2007-09-01 14:38:28 · 1 answers · asked by Anonymous

I was watchimg CSI NY and the bullits they pulled from a body were magnetised... I always thought lead could not be magnetic.

2007-09-01 13:06:21 · 5 answers · asked by numericobi 2

what causes the fire to go out whenever water comes in contact?

2007-09-01 13:00:10 · 4 answers · asked by warrenjr12 1

What is the molarity of the acid?

a. 0.40 M
b. 2.0 M
c. 10. M
d. 4.0 M

2007-09-01 09:42:28 · 2 answers · asked by REZmerized 1

2007-09-01 09:40:20 · 7 answers · asked by NERD 1

how? plz help

2007-09-01 09:32:15 · 19 answers · asked by fds 3

1.how many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? what is the limiting reagent?

2. what is the mass of water produced from the reaction of 24g of H2 and 160 g of O2. what is the limiting reagent?

2007-09-01 09:25:35 · 2 answers · asked by Tammy 2

2007-09-01 09:21:02 · 6 answers · asked by NERD 1

What is the concentration of HBr?

1.4 N

0.72 N

3.1 N

0.36 N

2007-09-01 08:40:35 · 2 answers · asked by Anonymous

explain or describe the elctronegativity scale devised by linus pauling

2007-09-01 08:36:55 · 2 answers · asked by yemisi 2

What element that can dissolve carbon?

2007-09-01 06:06:00 · 4 answers · asked by physics maniac 2