Chemistry - January 2007

2007-01-10 12:18:10 · 7 answers · asked by c.hults 1

supporse you made measurements for unknown liquid, the value you recorded of the empty beaker was 5.00 g too low. All the measurements were correct. how would this error seem to affect the mass of the unknow liquid? How would this error seem to affect the density of the unknown liquid?

2007-01-10 12:04:10 · 1 answers · asked by carla 2

There are three that I am disputing. Here they are:

Determine the number of atoms that are in 1.25 mol of O2.

Find the percentage composition of a compound containing 32.0 g of bromine and 4.9 g of magnesium.

If your chemistry classroom has a volume of 1.8 x 10^5 dm^3, how many gas particles are in the room at standard temperature and pressure? (Remember that 1 mole of any gas occupies 22.4 dm^3 at STP.)

Thank you for your help!

2007-01-10 11:53:23 · 2 answers · asked by S Denise J 2

2007-01-10 10:29:45 · 2 answers · asked by don't_worry_about_it 1

2007-01-10 10:20:32 · 3 answers · asked by ashlynn18 5

2007-01-10 10:13:11 · 1 answers · asked by Anonymous

How do I figure that out?!
Please and thank you

2007-01-10 10:07:22 · 2 answers · asked by bretssillyjo 1

i dont get this kind of problems can some one explain it to me?

2007-01-10 09:57:54 · 9 answers · asked by I don't know 2

i need to get the sodium out of salt can somone tell me how

2007-01-10 09:55:10 · 3 answers · asked by shane t 1

For a compound light microscope. Thanks

2007-01-10 09:52:14 · 1 answers · asked by karenlm215 2

2007-01-10 09:31:10 · 2 answers · asked by linifer74 1

some examples
NaCL is polar ionic
CaO is polar covalent
AIP is nonpolar covalent
MgO is polar covalent
LiF is polar ionic

so NaI is _ _ _ _ _ _ _ ?????????

2007-01-10 09:22:51 · 3 answers · asked by linifer74 1

What will happen when corn syrup, vingar, and cooking oil are placed into the same container?
Predict whether a piece of cork and a plastic block will float or sink in the container.
PLEASE HELP! thanks:)

2007-01-10 09:22:25 · 14 answers · asked by Anonymous

2007-01-10 08:45:51 · 8 answers · asked by 〜ベラベル〜 4

Theoretically, of course. If you slammed the graphite REALLY hard onto the diamond, could you break the diamond as well as the graphite?

2007-01-10 08:34:42 · 5 answers · asked by bowlingcap 2

2007-01-10 08:12:28 · 5 answers · asked by tina d 1

2007-01-10 07:22:09 · 4 answers · asked by cspence777 1

2007-01-10 07:18:50 · 10 answers · asked by rosie 1

In Particular, a Perchlorate Salt, is "Oxyxclean" Only Pool Chlorine?

2007-01-10 07:16:43 · 4 answers · asked by Anonymous

There is an easy equation to use for formation questions, but in combustion I get confused. How do you construct the energy cycles? Thanks!

2007-01-10 07:05:12 · 4 answers · asked by Anonymous

2007-01-10 06:56:36 · 5 answers · asked by Anonymous

2007-01-10 06:54:30 · 6 answers · asked by Turnip 3

2007-01-10 06:42:23 · 6 answers · asked by dreamer 1

2C(s) + 2H2O(l) ==> CH4(g) + CO2(g)

A. What mass of carbon is needed to produce 16.04 L of methane at STP?

B.What volume of carbon dioxide at STP is produced from 829 g of carbon?

Ok, I need help, I have tried these problems and I think I have the correct answer.
A.17.2 g
B.773 L
PLEASE HELP!

2007-01-10 05:46:09 · 2 answers · asked by Domino 1

- -6F
- 32F
- 68F
- 136F

2007-01-10 05:42:30 · 5 answers · asked by Anonymous

Where can someone find such harmless chemicals for home projects?

2007-01-10 05:32:25 · 3 answers · asked by legionmk59 1

2007-01-10 05:28:32 · 5 answers · asked by Anonymous

2007-01-10 05:25:44 · 7 answers · asked by Anonymous

2007-01-10 05:15:22 · 3 answers · asked by Anonymous

2007-01-10 05:12:49 · 3 answers · asked by Anonymous