Chemistry - September 2006

HCI
AgNO3
KCIO3
HNO3
NaCI
CuSO4

2006-09-10 11:03:35 · 6 answers · asked by isha 1

okay. i did a lab in chemistry where i have to find the optimum volume of the percipitate. i found it, but now i have to convert it to a mole ratio. how do i do that? btw, we did two experiments.
Here are the optimum volumes of the percipitate and the reactants as well:
Fe(NO3)3 & NaOH: 14.2 mL Fe(NO3)3, 46.8 mL NaOH ;; 19.8 mL of precipitate [Fe(OH)3].
CuCl2 & Na3PO4: 34 mL CuCl2, 26 mL Na3PO4 ;; 31.0 mL precipitate [Cu3(PO4)2]

so now what do i do? i can't do anything since everything is in like mL and so... i'm kind of stuck. this is due tomorrow, so please help me ASAP. thank you so much! :]
P.S. Please show the steps otherwise i'd get confused and lost... thanks! And btw, you're supposed to find the stoichiometric mole ratio for each reaction and then the chemical equation. X]

PLEASE PLEASE PLEASE. i am seriously desparate now. T_T

2006-09-10 10:59:06 · 2 answers · asked by sooper mouse! 2

Which one of these statements about the Bohr's Model of the atom is incorrect? (I think that the answer is C am I right?)

a) Electrons fill lower energy orbits first
b) The great the quantum number the higher the energy of the orbit.
c) Electrons occupy orbits with certain radii corresponding to discrete energies.
d) Elements with the same number of electrons in their outer orbits have similar properties.
e) All of these statments are correct.

2006-09-10 10:56:41 · 8 answers · asked by Cali 1

is there a way to convert 1 mL to g? like ANY way? i need this ASAP. PLEASE HELP ME ASAP. thank you so much. :]

2006-09-10 10:19:26 · 8 answers · asked by sooper mouse! 2

2006-09-10 10:09:18 · 6 answers · asked by Anonymous

I am curious because I am writing a book, and since I am aware that gold is a fairly soft metal I would like to know if it would be possible to make a basket style sword handle out of a mix of gold and some other metal so that if it were to take a hit it would not colapse and and crush the sword user's hand.

2006-09-10 09:54:56 · 4 answers · asked by pharaoh_yugi2000 1

Every video shows people mixing DIET coke and mentos but never regular coke....why is this?

2006-09-10 09:53:09 · 18 answers · asked by danets10 1

I saw someone light a beaker full of red bull energy drink on fire. She said it didn't matter if it was sugar free or regular, both would burn. Why will the energy drink burn like that?

2006-09-10 09:47:26 · 3 answers · asked by aghighclass 1

a solid carbon dioxide sample transforms to the gaseous state at room temperature. As a result the sample would undergo

no change in physical properties.
a change in density
a change in chemical properties.
a change in mass.

2006-09-10 09:41:01 · 4 answers · asked by im M 1

For example- when you see spaceships blow up in movies, there is a big explosion- but I thought that you needed oxygen as a fuel for fire?

Also, if 0 gravity, water goes into dreoplets- what would fire look like in 0 gravity?

Just curious...

2006-09-10 09:25:05 · 16 answers · asked by Personal Angel 3

How would you calculate separation energy of the necleon of a given element like helium or oxygen?

2006-09-10 09:24:00 · 2 answers · asked by ghakh 2

2006-09-10 09:23:29 · 7 answers · asked by RaeMP 1

okay, i have two quick questions for you...

"what are 3 states of matter"?

and

"a friend tells you that a newspaper is completly gone, because it was burned up in a fire. Use the law of conservation of mass to write an explination telling your friend, what really happend to the newspaper."

if someone could help me with those, it would be greatly appreiciated!!
thanks!! =)

2006-09-10 09:23:01 · 7 answers · asked by butterflybabe1822000 2

i have 2 options for an answer which its
1.03240 * 10 square root negative 2 which it equals to .010324
but then i also have
1.0324 * 10 square root -2 and it equals the same thing.
but i mean whats the right answer if both equal the same and the only thing that changes is that one has a 0 at the end and the other one doesnt?

2006-09-10 09:22:09 · 6 answers · asked by im M 1

Just a few minutes ago, my father brought me into his room which had all electronics off. He said to me, "Do you see something in the TV?" Now, a little background check before this:
My father woke up early in the morning (like he does every weekend for the past 16 years), had a cup of coffee, got the newspaper (since it is Sunday) and worked on his truck. He has worked outside, every weekend for the past, 16 years! He's had a few beers (which don't affect him) and a few cigarettes (which don't affect him either). It was a normal Sunday until this question popped up.
After fighting with me and my mother, confirming we couldn't see anything in the television (he said he could see Jason X the movie, and an oldie movie in the TV) I brought him to my mothers TV to see if he could see something in there too, and he did (and we had the lights turned off as well).
I believe this might be something in his subconscious mind transferring to his eyes. What is he seeing? Has it been documented?

2006-09-10 09:20:51 · 5 answers · asked by Sagara S 1

If I Leave one of my surface burner's on for an hour'' how much water would be released from flame???if i could capture the water in a container''if any

2006-09-10 09:08:45 · 1 answers · asked by Anonymous

2006-09-10 09:05:50 · 8 answers · asked by Anonymous

2006-09-10 09:01:32 · 7 answers · asked by Anonymous

what are ways components of a mixture can be separated?

2006-09-10 08:25:03 · 4 answers · asked by ryguy2303 3

Naphthalene has a melting point of 80 degrees Celsius. Explain the different results:

Student 1: 80 - 95 degrees
Student 2: 85 - 92 degrees
Student 3: 79 - 82 degrees
Student 4: 70 - 80 degrees

Which student(s) did the experiment correctly and what possible reasons could the others be in error?

2006-09-10 07:35:38 · 4 answers · asked by Emerson 5

if possible please show the way how u got the answer & thanx a lot

2006-09-10 07:31:40 · 2 answers · asked by ramzinammour 2

I am writing a report and need to know this information by Tuesday morning. If you answer this correctly, I will greatly appreciate it. Again, the elements are Antimony and Mercury. Best answer will be judged around 7AM on Wednesday.

2006-09-10 07:00:11 · 2 answers · asked by Anonymous

1 - How does a physical property differ from a chemical property?
2- When is a property not a change?

You would really be helping me out if you can answer either questions. Thanks.

2006-09-10 06:35:55 · 0 answers · asked by yassem1ne 2

2006-09-10 06:35:13 · 1 answers · asked by Karli 1

2006-09-10 06:35:04 · 2 answers · asked by b f 1

Based on this article: http://en.wikipedia.org/wiki/Structural_steel the critical temperature of structural steel is 540 degrees celcius. Based on this article: http://en.wikipedia.org/wiki/Jet_fuel the open air burning temperature of jet fuel is between 260 and 315 degrees celcius. If these numbers are correct, how long would the jet fuel have to burn in order to bring the steel to its critical temperature?

2006-09-10 06:25:56 · 3 answers · asked by Roland D. 2

What physical properties could be used to separate iron fillings from Salt?
is it distilliation?

2006-09-10 06:20:58 · 2 answers · asked by ryguy2303 3

I want to hear peoples opininons towards the reasons why Chemistry important. If you could help me I would be very gratefull.

xxx

2006-09-10 06:20:03 · 6 answers · asked by Anonymous

I was recently told that for example, when a doctor prescribes medications to a Red Head that the Dr. takes that into consideration. Because Red Heads don't have the same effect as others do to alot of things? ...something having to do with the genetics? Is any of this true?

2006-09-10 06:10:11 · 12 answers · asked by hernandezconley 1

Max temperature, open air temperature, etc. Are the temperatures in this artice: http://en.wikipedia.org/wiki/Jet_fuel correct?

2006-09-10 06:09:25 · 2 answers · asked by Roland D. 2