Chemistry - January 2007

2007-01-03 21:18:55 · 4 answers · asked by boredX_x 2

2007-01-03 21:12:46 · 4 answers · asked by #15mwu 5

a)- energy is neigher created nor destroyed.
b)- energy can be converted into one form to another.

If I disprove above rule by writing a comment like "Energy can be destroyed when one goes dead" you know, in one living thing, there are alot of energies and soul, as a living thing deads, wat ever energies were in it are destroyed and soul too.

so i've disproved above rules , please declare my name in nobel prize list, give me prize give me nobel prizzzzzeee please

hows that ? any comment

2007-01-03 20:48:47 · 6 answers · asked by Robert P 1

calcium hydoxide
magnesium hydroxide
sodium hydroxide

2007-01-03 20:46:18 · 7 answers · asked by Anonymous

Potassium hydroxide and sulphuric acid
Magnesium hydroxide and nitric acid
sodium hyroxide and ethanoic acid

2007-01-03 20:43:25 · 4 answers · asked by Anonymous

There are crystals left what happened to the water? what was lseft behind? what is the chemical name for this solid?

2007-01-03 20:38:48 · 3 answers · asked by Anonymous

(A) Its volume is changed.
(B) Its shape is changed.
(C) Both its volume and shape are changed.
(D) Both its volume and shape remain unchanged.

Please indicate which letter and the explaination along with it. Thanks in advance! :) I will award the person who gives the best answer 10 points.

2007-01-03 20:28:46 · 10 answers · asked by *azure* 2

and do u know the structure of ovalbumin( or ovalbumen)?

2007-01-03 19:13:38 · 5 answers · asked by bay-from-indonesia 1

i need complete procedures of the investigatory projects

2007-01-03 19:00:53 · 1 answers · asked by Cristina M 1

a. air is blown with mouth slightly open

b. air is blown with mouth wide open

how will you account for this?

2007-01-03 18:47:08 · 2 answers · asked by Anonymous

2007-01-03 18:36:57 · 1 answers · asked by jc 1

2007-01-03 18:12:50 · 1 answers · asked by eilisha19 2

.03246 mol NO in liters @ STP

how do you do that?

2007-01-03 17:12:51 · 3 answers · asked by portlanddancer 2

2007-01-03 16:26:18 · 5 answers · asked by pps 1

Write the formula (including charge) for each ion:

Ammonium ion
Tin (II) ion
Chromate
Nitrate ion
Cyanide ion
Iron (III) ion
Permanganate ion
Manganese (II) ion

2007-01-03 16:22:38 · 2 answers · asked by mz. * 1

which method of energy transfer is takes place when two objects at different temperatues are placed into a vaccum without touching each other?

2007-01-03 16:15:39 · 1 answers · asked by Anonymous

In the van der Waals equation


"R" is the gas constant (0.0820574 L atm mol-1K-1) and "V" is the volume in litres of "n" moles of gas at the temperature "T" in Kelvin; "a" and "b" are constants which are dependent upon the gas. Calculate the pressure, P, for 2.36 moles of argon for which a is 1.34 L2 atm mol-2 and b is 0.0322 L mol-1 if it is contained in a 3.24 L container at 322 K.

2007-01-03 16:03:44 · 1 answers · asked by angel 2

2007-01-03 15:53:31 · 2 answers · asked by Bel Mar 1

I've got to construct a model of a molecule of neon for my science class, but, and please forgive my ignorance, I don't know what the hell I'm doing. I know there are 10 electrons on the two energy shells, but I don't know what to put inside the nucleus. I was thinking 10 protons and 10 neutrons, but I'm not sure at all. Thanks in advance for any help.

2007-01-03 15:49:32 · 4 answers · asked by Anonymous

HELLO. school has started up again. so that means my questions begin to appear again. please help me!!!!! thanks!!

Hot air balloons are based on a very basic scientific principle: warmer air rises in cooler air. Why do you think hot air rises in cooler air?

What is the difference between pressure and weight?

2007-01-03 15:48:04 · 3 answers · asked by Anonymous

(lab)

I weighed the chalk on an electronic scale, wrote my name on the board then reweighed the chalk. It decreased from 9.27g to 9.25g. Now I have to convert it to molecules so I divided it by CaCO3's atomic mass (100.09g) and multiplied it by 6.02x10^23 and got 5.57x10^23 particles. Is this right?

2007-01-03 15:15:41 · 5 answers · asked by Anonymous

i always liked this one.

2007-01-03 14:57:28 · 22 answers · asked by rhino_man420 6

2007-01-03 14:33:38 · 9 answers · asked by Anonymous

2007-01-03 14:31:11 · 3 answers · asked by Anonymous

i heard that methamphetamine is so addictive that when people who are despreate actually cook it from their own urine is that even possible wow!! you must be really desperate anyways i think that the metabolites might be able to be converted back but i am skeptical to me it sounds like a myth. because imabine how many people would do that if it was possible.

2007-01-03 14:15:36 · 3 answers · asked by Goldfish 2

1) HBr(g)
2) HCI(g)
3) HF(g)
4) HI(g)

2007-01-03 13:53:51 · 3 answers · asked by Anonymous

real question: what neutral substance could be formed from the combo H+ ion from the acid and OH- ion from the base?
k

2007-01-03 13:48:44 · 7 answers · asked by cowboizgrl 1

a) both covalent & hydrogen bonds
b) only hydrogen bonds
c) both ionic & hydrogen bonds
d) covalent bonds, only

2007-01-03 13:47:04 · 8 answers · asked by Anonymous

tell? links? please?

2007-01-03 13:44:14 · 3 answers · asked by Anonymous

The electron configurations in this compoound are the same as the electron configurations of atoms in group 14, 17, 18, or 1?

2007-01-03 13:44:00 · 2 answers · asked by Anonymous