Chemistry - November 2006

2006-11-12 08:15:44 · 1 answers · asked by Mr.Ansa 1

What metals that disslove from hydrochloric acid?

2006-11-12 08:14:54 · 2 answers · asked by Anonymous

What kind of bonds does gold have? How do these bonds explains gold's properties?

2006-11-12 08:13:27 · 5 answers · asked by Navy SEAL - 42 2

50 g(l) H2O at 0*C-> 50g(s) H2O at 0*C?
A) 222 cal released
B) .22 kcal released
C) 4kcal released
D) 4000 cal absorbed

2006-11-12 08:12:34 · 1 answers · asked by chimstr 1

A) they will be the same
B) steam
C) boiling water

2006-11-12 08:02:51 · 7 answers · asked by chimstr 1

2006-11-12 08:02:24 · 3 answers · asked by sara a 1

2006-11-12 07:51:51 · 3 answers · asked by SALMA K 1

Explain why a triple bond between 2 nitrogen atoms is stronger than a double bond between oxygen atoms

2006-11-12 07:50:30 · 1 answers · asked by Navy SEAL - 42 2

no hydroxide ions, a relatively small fraction of the maximum number os hydroxide ions, a relatively large fraction of the maximum number os hydroxide ions, or 100% o the maximum number os hydroxide ions

2006-11-12 07:44:11 · 3 answers · asked by Anonymous

A photon has a frequency of 6.0 x 10^4 Hz

Convert this frequency into wavelength (nm)


I been having trouble with this problem for a while now, and i got no one to help me, so i decided to ask for help in here,can anyone please help me by explaining how to solve this problem...Thanks =]

2006-11-12 07:43:37 · 2 answers · asked by asdrewq 1

AgNO3+NaCl->AgCl+NaNO3

2006-11-12 07:41:34 · 2 answers · asked by coolpuffin 2

salty, acidic, neutral, or basic

2006-11-12 07:41:21 · 1 answers · asked by Anonymous

2006-11-12 07:31:15 · 1 answers · asked by Anonymous

silver metal, non slver metal, fixer, or sliver salt

2006-11-12 07:25:59 · 1 answers · asked by Anonymous

1.The iodine pentafluoride gas is prepared when iodine and fluorine react. A 5,00L container was used for reacting 10,0g of iodine and 10,0g of fluorine. When the reaction was finished the temperature is 125°C. Calculate the partial pressure of iodine pentafluoride gas and the total pressure of the final mixture. What gas law are you applying?

2006-11-12 07:20:23 · 1 answers · asked by gaby p 1

Two gas tanks are linked by a connecting tube of negligible volume with a valve. One contains 15.0 L of nitrogen at 7.0 atm pressure. The other contains 8.4 L of neon at un unkown pressure. When the valve is opened, the final pressure of the two tanks combined is 10.0 atm. What was the original pressure of neon in the one tank?


My other question is finding the final pressure.


Two gas tanks are linked by a connecting tube of negligible volume with a valve. One contains 15.0 L of nitrogen at 7.2 atm of pressure. The other contains 8.3 L of helium at 4.1 atm of pressure. If the valve is opened, what is the final pressure of the two tanks combined?

2006-11-12 07:08:36 · 4 answers · asked by Anonymous

sprays

2006-11-12 07:02:17 · 3 answers · asked by JESSICA J 1

2006-11-12 06:54:25 · 1 answers · asked by henry f 2

2006-11-12 06:51:14 · 4 answers · asked by Anonymous

2006-11-12 06:51:10 · 5 answers · asked by Nabil K 1

2006-11-12 06:37:05 · 16 answers · asked by ortheother 1

how do you do these? o_O i tried to do it a few times and i kinda got stuck.

A + 2 B => 3 C + D
Experiment 2 : A0 = 0.240 M, B0 = .120M, Initial rate of reaction = 2.00 M/h
2d. Assume that the reaction goes to completion. Under the conditions specified for experiment 2, what would be the final molar concentration of C?
I found the rate law equation to be: rate = 603 [A]^2[B]^2
how do you do this problem? o_O i don't think i understand the wording too much.

3b. Partial Pressure of A as a function of time at 100 C.
PA (mm Hg) ;; t (sec)
348 ;; 0
247 ;; 600
185 ;; 1200
105 ;; 2400
58 ;; 3600
Describe, without doing any calculations, how graphs can be used to determine whther this reaction is first or second order in A and how thse graphs are used to determine the rate constant.
what?! ._. we worked with rate laws and stuff, but not with pressures. is it the same as when you're working w/ T & rates?

please help me. ._. i understand it, but the wording is just... out there... thanks! :]

2006-11-12 06:31:34 · 1 answers · asked by sooper mouse! 2

2006-11-12 06:19:47 · 4 answers · asked by The Old Professor 5

explain why 10grams of water has a volume of 10mL, but 10 grams of water vapour has a volume of 400mL.

2006-11-12 06:15:31 · 4 answers · asked by cindy 3

why is it easier to move your hand through air than through water?
(particle theory)

2006-11-12 06:06:19 · 6 answers · asked by cindy 3

I've tried for about 3 hours and still havent managed to get it! heres the equation: __Al+__Pb(NO3)2 -->__Pb+__Al(NO3)3

2006-11-12 05:39:15 · 6 answers · asked by Biscuit 2

A 25g piece of aluminum (which has a molar heat capacity of 24.03J/C mol) is heated to 82.4 degrees C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18) initially at 22.3 degrees C. The final temperature of the water is 24.9 degrees C. Calculate the mass of water in the calorimeter.

Please help me somebody....

2006-11-12 05:34:54 · 1 answers · asked by ChEMIsTrY ChICkiE 1

If you could answer as simply as possible that would great. thanks :)

2006-11-12 05:19:46 · 4 answers · asked by Anonymous

What is the molarity of a solution containing 27.0 g of NH3 in 755 mL of solution?

2006-11-12 05:17:38 · 3 answers · asked by mastersource2005 5

thank you :)

2006-11-12 04:52:13 · 7 answers · asked by Anonymous