Chemistry - November 2006

Ca(NaO*3)*2

(*=subscript)

All I know is that the 3 different elements in this compound are: (1) Calcium, (2) Sodium, and (6) Oxygen/Oxide.

2006-11-03 17:20:32 · 4 answers · asked by LOVE♥ 1

Name the following compounds using Roman numerals...

Please help me! I really need help! Can you please explain and give me the answer. OR at least explain if you're not going to give me the answer! Thank you! =)

(*=subscript)

:: CrBr*2

:: Pb(OH)*2

:: Cu*2O

:: CuO

2006-11-03 16:53:25 · 3 answers · asked by LOVE♥ 1

2006-11-03 16:53:25 · 2 answers · asked by denise 1

carminic acid,consist only carbon, hydrogen and oxygen. it is 53.66% C and 4.09% H by mass. A titration required 18.02ml of 0.0406M NaOH to neutralize 0.3602g carminic acid. assuming that there is only one acidic hydrogen per molecule. what is the molecular formula of carminic acid? the molar mass is ~500g/mol
explain in detail.

2006-11-03 16:48:01 · 2 answers · asked by tanny 1

In chemistry, ATOM is the smallest particle of matter. later on, was the discovery of subatomic particles which was smaller than atom. But then, atom was still considered as the smallest particle of matter.

2006-11-03 15:52:26 · 9 answers · asked by john 1

I'm considering building a Seebeck effect power plant using a platinum-ignited hydrogen flame in order to power a robot. How hot does a hydrogen flame burn?

2006-11-03 15:21:05 · 3 answers · asked by sciguy 5

Why does rust smell like blood? Is it something to do with hemoglobin? Or are they unrelated?
Thanks!

2006-11-03 14:56:38 · 5 answers · asked by indygocean 2

i have substitute salt ( i will say that cause it has potassium chloride and ammonium chloride), potassium permanganate, ethanol, liquad hydrocarbons, borax, hydrogen peroxide, sodium hypochlorite, sodium chloride, chlorine, hydrochloric acid, sodium bicarbonate,

2006-11-03 14:27:36 · 8 answers · asked by Me + Me = BANG! 2

A sample of cocaine, C17H21O4N, is diluted with sugar, C12H22O11. When a 1.00-mg sample of this mixture is burned, 1.00mL of carbon dioxide (d=1.80 g/L) is formed. What is the percentage of cocaine in this mixture?

The answer, according to the text, is 28%, but my friend and I have no idea how this answer was obtained. If you can offer us any insights, we would greatly appreciate it!

2006-11-03 13:45:58 · 3 answers · asked by whabtbob 6

phosphoric acid contains three acidic hydrogen. detail explaination

2006-11-03 12:20:47 · 1 answers · asked by tanny 1

I know the molarity of each solution and the milliliters of the acid

2006-11-03 11:29:44 · 4 answers · asked by Steve D 1

I have to write a general essay on the uses and applications of the Gas Laws (Boyles's, Charles', Gay-Lussac's, Avogadro's), Fick's Law of Diffusion, Dalton's Law of Partial Pressures and Henry's Law of Solubility to the Biosciences.b (1000 words)

I am not required to re-define or to cite any of the laws in equation/formula or mathematecal format.

Just wondered if anyone could provide me with some good book or website names which would be useful for this.

I need something relatively simple - this is the first time I've come across these laws and the lecture on them is only 3 days before the assignment deadline - I need to make a start and would appreciate any info - THANKYOU!

2006-11-03 10:48:58 · 3 answers · asked by jane 62 1

2006-11-03 10:14:04 · 6 answers · asked by Anonymous

ok im really confused is ionic the one that is composed of nonmetals and metals or is it the molecular?

in this case is NaH molecular, ionic, or what>? and what is an acid?? when is it that you put the prefixes b4 the name?

2006-11-03 09:32:21 · 3 answers · asked by im M 1

2006-11-03 09:13:27 · 2 answers · asked by Anne 1

I am about equally well at Chemistry and Biology and I am very good at Calculus. No exposure to physics. My main academic interests are immunology emerging infectious diseases and genetics. My number one driving force for becoming a doctor is because my mom died of leukemia so i am interested in leukemia, aml in particular. I just want to know like the difference btw the two or what classes can i take to make the distinction btw biochem and bio with a double major in chem very obvious to me....cuz now its like they are exact same

2006-11-03 09:02:40 · 8 answers · asked by jfa0209 2

i have to make a poster about argon and i have to put a 3D object on it of something made from argon what could i put ?

2006-11-03 08:58:04 · 5 answers · asked by matt 3

thanx

2006-11-03 08:53:53 · 4 answers · asked by Nelly J 3

2006-11-03 08:39:29 · 2 answers · asked by Anne 1

Is butane lighter or hevier than air?

2006-11-03 08:37:54 · 7 answers · asked by diggleM 2

Which species is not linear?

a. ) SO2
b. ) CO2
c. ) I3-
d. ) N3-
e. ) CS2

2006-11-03 08:09:00 · 4 answers · asked by Anonymous

Which of the following statements are true regarding the Lewis structures of SFO2- and SFO2+?

a. There are more than eight electrons in the valence shell of one of the atoms in SFO2-.
b. There are more than eight electrons in the valence shell of one of the atoms in SFO2+.
c. There are four bonds about S in both species.
d. There are negative (-) formal charges in both species.
e. There are positive (+) formal charges in both of these species.

2006-11-03 08:07:31 · 1 answers · asked by Anonymous

Choose the true statements regarding the charge-minimized Lewis structure(s) of the BrO2- ion.

a. There is only one charge-minimized structure for this ion.
b. There are two charge-minimized resonance structures for this ion.
c. The formal charge on the central Br atom is -1
d. The formal charge on the central Br atom is +1
e. The formal charge on the central Br atom is 0

2006-11-03 08:06:59 · 2 answers · asked by Anonymous

2006-11-03 08:04:49 · 6 answers · asked by Anonymous

a)carboxylate ion and an amine
b)carboxylic acid and an amine
c)carboxylic acid and an ammonium ion
d)carboxylate ion and an ammonium ion

2006-11-03 08:01:30 · 3 answers · asked by *AH AH* 1

wondering the amount a person would want in a sample and how much they would be willing to pay for it (dont worry about shipping)

2006-11-03 07:38:04 · 2 answers · asked by Anonymous

2006-11-03 07:28:10 · 4 answers · asked by Malet 1

12s10 12s12

B.
5s7

C.
1

D.
none of these

2006-11-03 07:24:51 · 2 answers · asked by Anonymous

hydrogen gas has been suggested as a clean fuel because it produces only water vapor when it burns. if the reaction has a 98.8% yield, what mass of hydrogen forms 85.0 kg of water?

2006-11-03 07:21:14 · 3 answers · asked by azncrazygurl520 1

12s10 12s12

B.
5s7

C.
1

D.
none of these

2006-11-03 06:53:39 · 3 answers · asked by Anonymous