Chemistry - January 2007

2007-01-23 19:11:47 · 3 answers · asked by Janelle Alexandria 3

2007-01-23 19:05:07 · 1 answers · asked by amy12 1

2007-01-23 18:40:34 · 6 answers · asked by samiran n 1

2007-01-23 18:36:33 · 1 answers · asked by Random G 3

i am doing this project for science and i would like to know some of its uses and where it can be found. if you could tell me it would be great. thanks.

2007-01-23 17:32:51 · 4 answers · asked by Anonymous

CuSO4*5H2O ---> CuSO4 + H2O

C8H18 + O2 ---> CO2 + H2O

P2O5 + H2O ---> H3PO4

HN3 + Zn ---> Zn(NO3)2 + NO2 + H2O

2007-01-23 17:03:19 · 2 answers · asked by SICK MY DUCK! 1

physics final tomorrow
need help.

whats the diff between Q = MCdeltaT and Q = ML?
and when do i use them

thanks

-K

2007-01-23 16:23:27 · 1 answers · asked by x7_lostandconfused_7x 2

How many molecules of NaCl are in 280 ml of .8M NaCl?


I need help on studying these materials.....i have finals next week, and chemistry is not my subject......but i need at least a B in the class. Plz Help me......

2007-01-23 16:22:40 · 3 answers · asked by Anonymous

Acetylene gas (c2h2) burns in a welding torch with oxygen to form carbon dioxide gas and water vapor

2007-01-23 15:39:35 · 4 answers · asked by Anonymous

is it H2O like water?

2007-01-23 15:35:46 · 12 answers · asked by Anonymous

Please help! I greatly appreciate it.

2007-01-23 15:17:18 · 1 answers · asked by Random G 3

How many grams of AgNO3 are in a 35ml beaker of 1.5 M AgNO3?


i need help because i didnt understand it much....if you could also give me some tips in doing stoichiometry......thank you very much.

2007-01-23 15:14:20 · 3 answers · asked by Anonymous

2007-01-23 15:13:21 · 2 answers · asked by shawny2cute 1

Does anyone know of a chemical or combination of chemicals that, when placed in water, will dissociate into gas at relatively lowlevels of electricity?

2007-01-23 15:12:37 · 2 answers · asked by sciguy 5

Calculate the number of moles of potassium chlorate, KClO3(s), that must decompose to produce potassium chloride, KCl(s), and 1.80 moles of oxygen gas.

I'm not sure how to figure this out, but I tried it, and I got 0.6 moles of KClO3 for my answer. Is this correct? If not, how is it figured out?

2007-01-23 15:12:00 · 3 answers · asked by !!! 3

2007-01-23 15:05:03 · 1 answers · asked by juanes34 2

2007-01-23 14:53:52 · 3 answers · asked by master darkness 1

A solution is prepared by dissolcing 23.7 g of CaCl2 in 375g of water. The density of the resulting solution is 1.05 g/mL. the concentration of the Cl ion in this solution is ______ M?

2007-01-23 14:49:53 · 4 answers · asked by Travis S 2

What is the molarity of sodium chloride in solution that is 13.0% by mass sodium chloride and that has a density of 1.10 g/mL?

2007-01-23 14:47:46 · 3 answers · asked by Travis S 2

I have to prepare to test proteins for a Food Science team of students in a few days.

2007-01-23 14:36:55 · 1 answers · asked by marleyfu 4

2007-01-23 14:29:18 · 11 answers · asked by Anonymous

i used to teach so pls help me out

2007-01-23 14:26:00 · 3 answers · asked by yogi j 1

2007-01-23 14:00:53 · 4 answers · asked by cowboy 2

Apparently, for everything that happens, there is a positive and a negative affect. ( symbols? 1010101)
What is this called and where can I find the best info on this?

2007-01-23 13:57:37 · 4 answers · asked by Anonymous

2007-01-23 13:46:27 · 4 answers · asked by Kate 1

Ba(CN)3+H2SO4-->BaSO4+HCN

Please help me balance it

2007-01-23 13:26:54 · 5 answers · asked by omaidamontes8 1

what is 67.5% in a fraction

2007-01-23 13:14:51 · 8 answers · asked by niquenique12 1

Use the data in the table below to calculate the bond energy, in kJ mol-1, of the sulfur-oxygen bond in SO2. Assume that the bonds in the SO2 molecule are equivalent (i.e., the have the same energy)

-Sulfur-oxygen bond in SO: Bond Energy (kJ mol-1) 587
-Oxygen-oxygen bond in O2: Bond energy 485
-Sulfur-oxygen bond in SO2: ????

2007-01-23 13:07:20 · 2 answers · asked by rachel z 1

Do I need induction heating? What chemical do I need to soften hdpe and change the degrees?

2007-01-23 12:53:50 · 2 answers · asked by Jon N 2

If you were to measure the radius of a balloon and get a different answer than the one predicted, what could have gone wrong?

2007-01-23 12:43:56 · 2 answers · asked by untilyoucamealong04 3