Chemistry - November 2006

2006-11-20 16:55:41 · 9 answers · asked by Anonymous

2006-11-20 16:30:20 · 3 answers · asked by candy 1

2006-11-20 16:19:15 · 5 answers · asked by ismaeljdiaz@sbcglobal.net 2

Elemental ananalysis of a compound results in the following data

65.45 % C

5.49 % H

29.06 % O



5.51 g of the compound fills a 191.0 ml bottle with a pressure of 4846.2 mm Hg at a temperature of 23.7oC. What is the molecular formula of this compound ?

2006-11-20 15:51:47 · 4 answers · asked by r.y 2

2006-11-20 15:27:58 · 1 answers · asked by Anonymous

How can you help me to describe all the bonding about an N atom in N2F4 Using valence bond theory
(hybridized orbitals; Lewis dot formula for a symmetrical molecule)

2006-11-20 15:26:24 · 1 answers · asked by jegatato86 2

Phosphorus pentachloride exists in the solid state as the ionic compound [PCl4+][PCl6-]; it exists in the gas phase as the PCI5 molecule. What is the lewis formula of the PCl4+ ion ?

2006-11-20 15:21:16 · 1 answers · asked by jegatato86 2

How do I find the net ionic equation for the reaction of sodium phosphate with hydrochloric acid?

2006-11-20 14:49:45 · 1 answers · asked by nglennie_06 1

why do you suppose there is such a great discrepancy between the accuracy of predicted masses for these two triads?

2006-11-20 14:35:44 · 1 answers · asked by Anonymous

-------->what is a crystal?

2006-11-20 14:33:01 · 2 answers · asked by Anonymous

why was mendeleev's decision to leave blank spaces on his table sometimes referred to as his most significant contribution to the periodic table?

2006-11-20 14:26:32 · 2 answers · asked by Noor 3

sodium phosphate reacts with calcium nitrate to produce sodium nitrate plus calcium phosphate

2006-11-20 14:10:58 · 3 answers · asked by hilary 2

2006-11-20 13:57:41 · 4 answers · asked by ninogrk 1

Lithium metal is burned in air.

gaseous hydrofluoric acid (HF) reacts with solid silicon dioxide.

and potassium dichromate added to acidified solution of sodium sulfite?

these are so tricky, i cant predict the correct answer.

2006-11-20 13:55:41 · 3 answers · asked by Anonymous

i know how to do everything except the most important part, when you start to acutally balance the equation like multiplying to the compounds. whenever i try to balance out one, the others become unbalanced again and i keep going back and forth and it never becomes balanced! please help! :(

ps if this doesnt make sense or if i can provide a sample problem, please let me know and i will do it.

2006-11-20 13:51:59 · 4 answers · asked by ... 3

ammonium carbonate and magnesium sulfate react to yield ammounium sulfate plus magnesium carbonate.

2006-11-20 13:38:37 · 4 answers · asked by hilary 2

2006-11-20 13:26:48 · 4 answers · asked by Anonymous

Why carbon almost always has four (4) bonds even though it only has two (2) unpaired electrons?
you can explained with words and pictures

2006-11-20 13:26:03 · 5 answers · asked by jegatato86 2

I need some help! My teacher said that neon is a noble gas. I don't know what that means. Please help me!

2006-11-20 13:15:06 · 7 answers · asked by Anonymous

I know that halogens have the highest electron affinity values but why is Chlorine the highest ?

2006-11-20 12:51:39 · 2 answers · asked by avalentin911 2

Which, if any, of the following equations is or are correctly balanced?
A . 4LiH + AlCl3 → 2LiAlH4 + 2LiCl

B. Sn + 2H2SO4 → SnSO4 + SO2 + 2H2O

C. 4BF3 + 3H2O → H3BO3 + 3HBF4

D. 3Cl2 + 6NaOH → 5NaCl + NaClO3 + 3H2O

Any help or explination is greatly appreciated!!!

2006-11-20 12:31:05 · 6 answers · asked by Anonymous

If iron on water would it rust or corrode???

2006-11-20 11:54:01 · 4 answers · asked by Anonymous

2006-11-20 11:51:46 · 2 answers · asked by luckinuf 1

A solution prepared by mixing 50g of sodium carbonate into a total solution volume of 500 ml

2006-11-20 11:49:32 · 2 answers · asked by starreyes2000_2000 1

2006-11-20 11:44:35 · 6 answers · asked by mira_982 1

2006-11-20 11:44:26 · 1 answers · asked by starreyes2000_2000 1

2006-11-20 11:44:19 · 9 answers · asked by BLR. 1

2006-11-20 11:43:48 · 1 answers · asked by Anonymous

how do you convert 50ml to g??

2006-11-20 11:40:36 · 3 answers · asked by Anonymous

What weights of Bovine Serum Albumin (molecular weight 66,000) are required to give solutions of 10ml and 100ml volumes containing 1μmole of BSA?

dont kno where to start.....how do i calculate

2006-11-20 11:36:02 · 4 answers · asked by Anonymous