Chemistry - June 2007

Specifically, a Cu/Zn cell.

2007-06-23 23:26:53 · 2 answers · asked by electric.sparkle 2

a) I^2 (iodine)
b) CH^3COOH
c) NH^3
d) C(Cl^4)

does anyone know the answer? i am really weak in chemistry and i need help fast.

2007-06-23 23:13:42 · 3 answers · asked by Lonelyz 1

a) magnesium hydroxide and dilute sulphuric acid
b) iron(II) hydroxide and dilute nitric acid
c) aqueous sodium hydroxide and dilute sulphuric acid
d) aqueous potassium hydroxide and dilute nitric acid

2007-06-23 22:53:13 · 6 answers · asked by Pat 2

i need 140 grams of it. If you know what it is, you probably know exactly why i want it. ;)

2007-06-23 22:40:01 · 2 answers · asked by bobertdude 2

thank you..........

2007-06-23 22:29:36 · 3 answers · asked by afifah awang soh 1

Just wondering: It is a known fact that plasticizers (the stuff which makes bags and plastic bottles soft, and seals of screw caps tight) get absorbed into food and act as endocrine interruptors in the human body.
Is that absorption process temperature-dependent at all?
I mean, we store food in freezers in plastic stuff for a long time. If low temperatures don't slow down the transfer of endocrine interruptors, I won't use plastic anymore.
Does anybody know if it has that effect though?

2007-06-23 22:20:05 · 1 answers · asked by Tahini Classic 7

Show examples, please.

2007-06-23 22:01:39 · 1 answers · asked by Anonymous

I'm not sure how to name this compound... CaSO3 * 5H2O using systematic name and this Na2CO3 * 10H2O using common name...

Did I provide the fomula for this compound, sodium carbonate monohydrate right?
I put it as Na2CO3 * H2O

Please help me. Thank you.

2007-06-23 21:15:37 · 3 answers · asked by Tram P 1

why did it happen if charcoal is a nonmettalic element which is not capable of changing the color of the flame?

2007-06-23 20:37:56 · 3 answers · asked by blub 1

2007-06-23 20:34:52 · 1 answers · asked by blub 1

2007-06-23 20:29:54 · 1 answers · asked by rahul p 1

2007-06-23 20:15:58 · 2 answers · asked by Anonymous

Hydrogen ion (H+)
Protons=
Neutrons=
Electrons=

Magnesium ion (Mg+)
Protons=
Neutrons=
Electrons=

Chlorine ion (Cl-)
Protons=
Neutrons=
Electrons=

2007-06-23 19:14:13 · 12 answers · asked by Anonymous

Helium (He)
Protons=
Neutrons=
Electrons=
Magnesium (Mg)
Protons=
Neutrons=
Electrons=
Silver (Ag)
Protons=
Neutrons=
Electrons=

2007-06-23 19:12:34 · 6 answers · asked by Anonymous

3.50 cm^3 of 1.00 mol/dm^3 nitric acid reacts with 25.0 cm^3 of sodium carbonate solution. calculate the concentration of sodium carbonate solution in mol/dm^3

2007-06-23 18:10:49 · 2 answers · asked by Stormy Knight 1

15cm^3 of a gaseous element (molecular formula X2）react completely with 10cm^3 of another gaseous element (molecular formula Y3) to produce 30cm^3 of gaseous product. What is the formula of the gaseous product?

2007-06-23 18:09:19 · 1 answers · asked by Stormy Knight 1

100cm^3 of a gaseous oxide of nitrogen, N2O, were completely decomposed into x cm^3 of nitrogen and y cm^3 of oxygen at the same temperature and pressure. What is the value of x and y?

2007-06-23 18:08:07 · 1 answers · asked by Stormy Knight 1

2007-06-23 17:24:06 · 1 answers · asked by +++cHaRmZ+++ 1

2007-06-23 16:57:37 · 3 answers · asked by marla y 1

The valve between a 5-L tank containing gas at 9 atm and a 10-L tank containing a gas at 6 atm is opened. What is the final pressure in the tanks?

2007-06-23 16:18:30 · 1 answers · asked by FlexRX 2

2007-06-23 15:23:44 · 7 answers · asked by aneesha.gupta 1

2007-06-23 15:01:54 · 4 answers · asked by Anonymous

please show what the ratios you used in solving this

thanks soo much!

2007-06-23 14:52:30 · 3 answers · asked by Anonymous

can someone give me some informations? I need to hand in the project before middle of July.....

2007-06-23 14:28:31 · 2 answers · asked by Cyrus25 1

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

2007-06-23 14:16:52 · 1 answers · asked by jhjhrgj 1

2007-06-23 14:00:57 · 4 answers · asked by 1st Liberal 6

2007-06-23 13:46:55 · 4 answers · asked by Anonymous

2007-06-23 13:39:33 · 6 answers · asked by Anonymous

smelter

2007-06-23 12:28:09 · 5 answers · asked by jhjhrgj 1

2007-06-23 11:04:21 · 9 answers · asked by Anonymous