Chemistry - December 2007

2007-12-16 06:07:48 · 3 answers · asked by Bobby S 3

What gasses, vaoprs, etc...?

2007-12-16 05:46:41 · 3 answers · asked by Anonymous

its for a peport so please help me i will be very thankful thanks a buch
MERRY CHRISTMAS

2007-12-16 05:44:37 · 5 answers · asked by Char 3

2007-12-16 05:34:34 · 1 answers · asked by Anonymous

3
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7
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4

2007-12-16 05:26:15 · 4 answers · asked by Anonymous

It seems to be used to measure the quantity of Vitamin A in foods, but what is it equal to? Milligrams? Micrograms?

Also there seem to be TWO types of measurement for Vitamin A, one is IU, the other is "RAE". Why are there 2 different measurements, and what is RAE?

http://www.nal.usda.gov/fnic/foodcomp/cgi-bin/list_nut_edit.pl

2007-12-16 04:44:33 · 1 answers · asked by Chimera's Song 6

2007-12-16 04:14:04 · 2 answers · asked by plccpa1966 2

A) HO2
B) H2O

2007-12-16 03:09:18 · 3 answers · asked by lol 1

much would the temperature of the water increase?

2007-12-16 02:34:26 · 3 answers · asked by lol 1

Compare hyrdrogen with the group 1a metals in terms of their ionization energy. how can you explain the difference?

2007-12-16 02:15:48 · 2 answers · asked by Tr4ck4Inc@ 2

2007-12-16 02:14:53 · 2 answers · asked by Tr4ck4Inc@ 2

how do the properties of the lanthanide metals compare to those of the alkaline earth metals?

2007-12-16 02:14:15 · 2 answers · asked by Tr4ck4Inc@ 2

someone please help because im so stuck

2007-12-16 02:13:23 · 1 answers · asked by <3 Due September 2010 <3 3

why does sodium have a higher ionization energy than cesium?

2007-12-16 02:12:20 · 3 answers · asked by Tr4ck4Inc@ 2

2007-12-16 02:11:29 · 2 answers · asked by Steve C 1

2007-12-16 02:10:24 · 1 answers · asked by Steve C 1

2007-12-16 02:07:00 · 2 answers · asked by Anonymous

chem laboratory

2007-12-16 01:57:48 · 2 answers · asked by Donkey_Kong 1

By what (single step) process does radon-226 decay to francium-236?

a.neutron capture
b.β particle emission
c.α particle emission
d.positron emission
e.electron capture

2007-12-15 22:31:41 · 2 answers · asked by kallystarr 1

Enriched uranium is uranium that has a greater proportion of ____.

a.plutonium-248
b.uranium-235
c.lead-207
d.uranium-238
e.radium-226

2007-12-15 22:21:38 · 5 answers · asked by Anonymous

The half-life of iodine-123 is 13.2 hours. What percentage of iodine-123 remains in a sample after 36 hours?

a.95%
b.37%
c.85%
d.15%
e.13%

2007-12-15 22:20:49 · 2 answers · asked by Anonymous

2007-12-15 17:54:20 · 2 answers · asked by Anonymous

2007-12-15 17:42:18 · 6 answers · asked by Anonymous

The directions state:
Determine the mole ratio of oxygen to tin in the product.

I figured out that there is:
0.169334 mol Sn
and
0.003125 mol O

But what's the product?
And how do I find the mole ratio?

Please help! Thanks :)

2007-12-15 17:31:22 · 1 answers · asked by ciabatta 2

2007-12-15 16:30:14 · 2 answers · asked by acemie 1

like, what evidence do you see/hear/smell ?
anything??

2007-12-15 15:55:03 · 7 answers · asked by Anonymous

Gay-Lussac's law is also charles law.

is P1P2/T1T2 qualitative or quantitative?

2007-12-15 15:00:23 · 2 answers · asked by carsmithol 2

please answer .
for science question

2007-12-15 14:47:51 · 7 answers · asked by Kisses! -A 2

A gas with a volume of 4L is allowed to expand to a volume of 12 L. What happens to the pressure in the container if the temperature remains constant?

2007-12-15 14:36:41 · 1 answers · asked by (: Muffin Man :) 2

Although I read somewhere that when its exposed to oxygen it oxides, I'm not sure how to answer this question, but I have it for a chemistry lab. "Although calcium is a metal according to its position on the Periodic Table it seemingly lacks luster. How can this be explained?"
Any ideas?

2007-12-15 13:39:30 · 6 answers · asked by Anonymous