Chemistry - March 2007

2007-03-01 05:24:30 · 3 answers · asked by mary_kevin05 1

2007-03-01 05:21:06 · 1 answers · asked by rainingmonkeypoo 1

For the reaction whose reactants and products are:



reactants: NO (g) H2O (g)


products: NH3 (g) O2 (g)



calculate the standard free energy change (kJ/mole) from the standard free energies of formation.

i got 1319.432 and it was wrong. can someone show me what i did wrong.

2007-03-01 05:16:34 · 4 answers · asked by xdmandyxp 1

Calculate the change in free energy (KJ) for the reaction


2H2S(g) + SO2(g) = 3S(s) + 2H2O(g)


under the following conditions:


T = 298 K
ΔGo = -90.0 kJ/mol



Pressure of H2S = 2.22 x 10-3 atm
Pressure of SO2 = 1.02 x 10-1 atm



Pressure of H2O = 2.60 x 10-2 atm

2007-03-01 05:15:38 · 1 answers · asked by xdmandyxp 1

2007-03-01 04:58:45 · 1 answers · asked by jenrid 1

2007-03-01 04:52:51 · 1 answers · asked by Jennifer 2

2007-03-01 04:43:08 · 4 answers · asked by ana P 1

Which of the following compounds present exceptions to the octet rule ?


a) SeF2


b) PCl3O


c) PO4-3


d) ClO4-


e) NF3

2007-03-01 04:37:18 · 2 answers · asked by garture 1

2007-03-01 04:19:20 · 2 answers · asked by bccrazybear 1

Solve this questions aswell:
An organic compound contains 12.8% carbon, 2.1% hydrogen and 85.1% bromine, by mass. Its relative molecular mass is 188.

a) Calculate its empirical formula.
b) Deduce its molecular formula
"plz show complete working as possible"

2007-03-01 04:07:48 · 2 answers · asked by zo shirazi 1

Any women of any race.

2007-03-01 03:44:14 · 1 answers · asked by Reggie M 1

2007-03-01 03:40:29 · 2 answers · asked by Kelli C 1

how does it work and what is purpose and what know i can get from this

2007-03-01 03:38:22 · 2 answers · asked by ameeeeeeeeeeeeeeeet 2

2007-03-01 03:20:05 · 18 answers · asked by wiLLIE 1

2007-03-01 03:14:20 · 5 answers · asked by steph_steph 2

flotation proccess?

2007-03-01 02:53:09 · 1 answers · asked by sh_nebo_f 1

I need a review of everything really badly. I obviously don't understand chemistry. Could anyone explain everything to me in a easy way? Maybe send me a website with "how to's" on it? Test is coming soon and I can't afford to get a terrible grade. Thanks.

2007-03-01 02:37:39 · 5 answers · asked by kickitup21 1

2007-03-01 02:33:51 · 3 answers · asked by ZulMalay 1

2007-03-01 02:30:42 · 4 answers · asked by ZulMalay 1

2007-03-01 01:16:47 · 3 answers · asked by chained 3

A. N2-
B. N2 2+
C. N2
D. N2 2-
E. N2+

please explain

2007-03-01 01:09:18 · 1 answers · asked by galdon885 1

2007-03-01 00:36:49 · 2 answers · asked by Amy Mangal 1

Please do not explain the theory of metallic bonding. I just need straightforward chemical names. "Eg: NaCL for ioninic bonding". I've seen similar questions asked, but answers turned out to be explaining what it is and the properties. I just need the two metal chemical names.
THanks.

2007-03-01 00:30:37 · 2 answers · asked by Anonymous

..... ?

2007-03-01 00:26:28 · 10 answers · asked by v. 1

2007-03-01 00:05:36 · 5 answers · asked by vetta 1