Chemistry - November 2006

2006-11-22 18:30:38 · 16 answers · asked by yahooanswers 3

2006-11-22 18:29:19 · 2 answers · asked by Brenda M 1

a. oxygen
b.iodine
c.sodium
d. aluminum
e. nickel, 2 eletrons lost
f. magnesium

2006-11-22 18:08:38 · 2 answers · asked by Christy 2

2006-11-22 18:05:42 · 3 answers · asked by antonie c 1

2006-11-22 17:47:37 · 14 answers · asked by Anonymous

2006-11-22 17:33:06 · 7 answers · asked by chapped lips 5

cemical or electronical

2006-11-22 17:25:51 · 3 answers · asked by Anonymous

CAN SOME ONE HELP ME ELECTRON CONFIGURATION

why does chromium (element 24) has 3d^5 and 4s^1 instead of 3d^4 4s^2

2006-11-22 17:17:20 · 8 answers · asked by John B 1

2006-11-22 17:09:56 · 8 answers · asked by prince 1

2006-11-22 16:53:28 · 6 answers · asked by MS. PATHUPATS 1

2006-11-22 16:49:45 · 0 answers · asked by gogogo 3

OK - I've never been much of a chemist - only continued with physics and bio at school, and now am heading geology-way at uni, and with the excitement of geochemistry, I'm starting to become a little more interested in these things called elements!!

So, I'm figuring Helium makes balloons float cause it's got such a low atomic mass, right? So is lighter than air? But Hydrogen is the lightest element isn't it, and pretty abundant - so what are the advantages of using Helium rather than Hydrogen?

2006-11-22 16:48:21 · 10 answers · asked by Anonymous

From anyone else who is or was a chemistry major like me, especially if you are now a successful professor or Phd....I would appreciate ANY words of encouragement even if it is just one word or sentence. Stories of when you were in college would be so great right now. I really don't have anyone to talk to. I am so totally burned out right now. I am an A student in all my subjects but the semester is nearly over and I really don't think I have what it takes emotionally mentally or physically to pass the finals, let alone enroll for the upcoming semester.
THANKS!

2006-11-22 15:45:56 · 7 answers · asked by Anonymous

2006-11-22 15:29:53 · 2 answers · asked by Anonymous

2006-11-22 14:27:11 · 4 answers · asked by prisca 2

Can someone please show me how to use gravimetric analysis and determine the gravimetric factor ect ect in a precipitation stoich problem, you jsut combine the middle of the equation or something to get the factor dont you,

If 0.2145 g sample Ni is dissolved and precipitated with excess DMG what mass of NiDMG is produced
( Molar mass DMG -116.1194 g/mol)
- solve using gravimetric factor

Btw no need to explain the basics I know all that, like how to convert to mols and grams ect ect

2006-11-22 13:29:34 · 2 answers · asked by Ravioli 2

For the following question use Charles's law, assuming that pressure and the number of moles of gas to be are constant.

1. V1 1.08L T1 25.4 C V2 1.33L T2?

2. V1 232 L T1 18.5 C V2 ? T2 96.2 C

Please Help!!!!

2006-11-22 13:28:22 · 3 answers · asked by candy525 1

At constant pressure or/and constant volume
will it shift the equilibrium? Personally i think so- under some conditions
But i dont know why.
Can anyone help me?

2006-11-22 13:13:07 · 2 answers · asked by Anonymous

so umm which one and why?

2006-11-22 13:06:32 · 9 answers · asked by Anonymous

right hi all!! ive got a chemistry predicament..anybody clever please feel free to answer asap! right well i got glucose and oxygen then its balanced to give 6 carbon dioxide and 6water..i have to calculate its heat change...theres a couple to be done! can anyone help..please...

2006-11-22 12:56:09 · 2 answers · asked by conflustered2006 1

2006-11-22 12:51:18 · 4 answers · asked by ME 1

Please I'm in junior high school (7-9 grade) and really want a good idea to win the science fair.

2006-11-22 12:49:10 · 6 answers · asked by strengthxxxalone 1

ammonia, carbon tetrachloride, hydrogen peroxide, methane, ozone, diphosphorus trioxide, nitrogen monoxide, chlorine dioxide, dintrogen oxide, carbon monoxide, arsenic tribromide, phosphrus pentabromide, drinitrogen tetroxide, silicon carbide, sulfur dioxide, plz tell me the formulas for those compounds.

2006-11-22 12:47:55 · 5 answers · asked by carboy_carlover 1

2006-11-22 11:59:08 · 2 answers · asked by flaca 1

Elements as in silicon, carbon, etc...

2006-11-22 11:58:37 · 1 answers · asked by Anonymous

2006-11-22 11:57:49 · 3 answers · asked by pinaysunrise 4

For each of the following sets of atoms and ions, arrange the memebers in order of increasing size:
(a) Se(2-), Te(2-), Se
(b) Co(3+), Fe(2+), Fe(3+)
(c) Ca, Ti(4+), Sc(3+)
(d) Be(2+), Na(+), Ne.

The numbers in the ( ) represent the number of electrons added or taken away.

I just want to check if my answers are right.
(a) Se < Se(2-) < Te(2-)
(b) Fe(3+) < Co(3+) < Fe(2+)
(c) Ti(4+) < Sc(3+) < Ca
(d) Be(2+) < Na(+) < Ne

2006-11-22 11:53:18 · 2 answers · asked by Rain 2

calorimeter?

If you could be specific, it would be very helpful. Thanks

2006-11-22 11:48:34 · 1 answers · asked by Arnold M 1

2006-11-22 11:46:25 · 2 answers · asked by Arnold M 1

2006-11-22 11:26:42 · 1 answers · asked by Sasuke 2