Chemistry - November 2006

2006-11-30 15:37:47 · 2 answers · asked by Ozzie 1

I'm given two pressure levels of the atmosphere and told that the air between them is cooling due to radiation at a rate that would be sufficient to cool the layer 1 degree C / day. I am then asked to figure out how many mm/day of rain must fall if the only heat source to this layer is the net condensation of liquid water.

Note: I'm not looking necessarily for a solution. Just a little guidance. :) Thanks!

2006-11-30 15:07:01 · 1 answers · asked by JoeSchmo5819 4

2006-11-30 14:39:52 · 5 answers · asked by shelby u 1

Ksp for Ag2S is 1.6 x 10-49. Would you expect Ag2S to precipitate under the conditions of a group II analysis if silver ions were still present at a concentration of 0.1M? Ka = 1.3 x 10-20 for the reaction H2S --><--- 2H+(aq) and the [H+] = 0.3 M and [H2S] = 0.1 M. Show your work.

2006-11-30 14:37:55 · 1 answers · asked by Kriztine96 1

2006-11-30 14:17:26 · 3 answers · asked by Anonymous

If at all possible, please add "how" he got that number and the math to it also if possible. Thanks.

2006-11-30 14:03:41 · 3 answers · asked by boychuka 3

Write a Balanced equatiion for each of these:
44 A) Ag2 O (s) >>>
B) Nickel (II) Carbonate >>>>>Nickel (II) Oxide + ?
C) Ammonium Nitrate >>>>> Dinitrogen monoxide + Water
48) A) HCl (aq) + Ca (OH)2 (aq) >>>>
B) Ag2 SO4 (aq) + AlCl3 (aq) >>>>(silver chloride is a precipitate)
C) H2C2O4 (aq) + KOH (aq)>>>>
D) CdBr2 (aq) + Na2S (Aq)>>>(Cadium sulfide is a precipitate)
50 Write a Balanced equation for the complete combustion of each compound:
A) Butene (C4H8)
B) Octane (C8H18)
C) glycerol (C3H8O3)
D) Acetone (C3H6O)
52: Complete these:
A) Al (s) + H2SO4 (aq)>>>>
B) HCl (aq) + Ba (OH)2 (aq)>>>>
C) Au (s) + HCl (aq) >>>>>
54) EACH IS BALANCED BUT "INCORRECT", so correct these:
A) Cl2 + NaI >>> NaCl2 + I
B)NH3 >>> N + H3
C) Na+ O2 >>NaO2
D) 2Mg +H2SO4 >>Mg2SO4 + H2
E) MgCl + CaOH >>> MgOH + CaCl
F) H2 + Cl2 >> H2Cl2

Please answer just at least a few of these, because this counts as a nice grade in chemistry class! I'll give 5 stars 2 whoever answers most & best

2006-11-30 13:21:46 · 2 answers · asked by truckin_90 2

CaO(s) into ions than to break up KF(s) into ions?
isnt Fluorine the most electronegative atom and thus woudlnt it be harder to break it from potassium?

2006-11-30 13:20:21 · 3 answers · asked by Anonymous

2006-11-30 12:43:57 · 4 answers · asked by jazzsonic99 1

2006-11-30 12:35:36 · 1 answers · asked by Anonymous

What volume of 6.00 M NaOH is required to contain 1.25 mol of NaOH?

2006-11-30 12:18:34 · 2 answers · asked by Mia16 3

Write a Balanced equatiion for each of these:
44 A) Ag2 O (s) >>>
B) Nickel (II) Carbonate >>>>>Nickel (II) Oxide + ?
C) Ammonium Nitrate >>>>> Dinitrogen monoxide + Water
48) A) HCl (aq) + Ca (OH)2 (aq) >>>>
B) Ag2 SO4 (aq) + AlCl3 (aq) >>>>(silver chloride is a precipitate)
C) H2C2O4 (aq) + KOH (aq)>>>>
D) CdBr2 (aq) + Na2S (Aq)>>>(Cadium sulfide is a precipitate)
50 Write a Balanced equation for the complete combustion of each compound:
A) Butene (C4H8)
B) Octane (C8H18)
C) glycerol (C3H8O3)
D) Acetone (C3H6O)
52: Complete these:
A) Al (s) + H2SO4 (aq)>>>>
B) HCl (aq) + Ba (OH)2 (aq)>>>>
C) Au (s) + HCl (aq) >>>>>
54) EACH IS BALANCED BUT "INCORRECT", so correct these:
A) Cl2 + NaI >>> NaCl2 + I
B)NH3 >>> N + H3
C) Na+ O2 >>NaO2
D) 2Mg +H2SO4 >>Mg2SO4 + H2
E) MgCl + CaOH >>> MgOH + CaCl
F) H2 + Cl2 >> H2Cl2

2006-11-30 12:16:14 · 2 answers · asked by truckin_90 2

2006-11-30 12:15:56 · 2 answers · asked by Kim L 1

How many electrons are shared in a double covalent bond?
a) 4
b) 2
c) 6
d) 1

2006-11-30 12:07:06 · 4 answers · asked by me 1

How many oxygen molecules are there in 1.00 mole of O2? How many oxygen atoms are there in 1.00 mole of O2?

2006-11-30 12:04:00 · 4 answers · asked by Mia16 3

2006-11-30 12:02:25 · 3 answers · asked by mary B 1

What is the shape of a molecule with a triple bond?
a) tetrahedral
b) bent
c) pyramidal
d) linear

2006-11-30 12:01:49 · 3 answers · asked by me 2

Eg
O+O=O2 ;
O+O+O=O3

2006-11-30 11:42:44 · 3 answers · asked by Gideon 1

The melting point of a compound is 1240 degrees C. Is this compound most likely an ionic a molecular compound?

2006-11-30 11:37:17 · 2 answers · asked by Anonymous

Fe2O3+ CO -----> Fe+ CO2

How many grams of Fe2O3 will be required to produce 5.90 moles of Fe?

2006-11-30 11:36:31 · 3 answers · asked by Anonymous

2006-11-30 11:35:57 · 4 answers · asked by Gadihel F 1

You know how you can get nitrogen and oxygen in a liquid state I just wanted to know if it is possible to get the air we breathe in a liquid or solid state?

2006-11-30 11:20:49 · 5 answers · asked by jesse6317 2

Can someone explain a little about sp3, sp2, and sp hybrid orbitals. I just don't get it. I've read the book, i've looked on wiki. I need help!!!

2006-11-30 11:06:15 · 3 answers · asked by eve_60 2

Can you name these Chemical Formulas?

1. Fe(OH)3
2. NH4I
3. Al(OH)3
4. Na2CO3

*Note: All numbers are subscripts

2006-11-30 10:52:41 · 5 answers · asked by Azena 4

plz explain why

2006-11-30 10:37:33 · 2 answers · asked by kogmu 3

say that i have 2,6-dimethyl-4-hexanol., what would be the major product if it reacts with H2SO4/heat? is it " 2,3,6-trimethyl-3-hexanol"?

if my answer is wrong can someone please tell me... also i have question that i can't seem to get it right... what if I have CH3Ch2C(CH3)2OH t what would be the product if it also reacts with h2so4/heat

2006-11-30 10:26:40 · 1 answers · asked by Anonymous

where might you find DNA within a cell?
where might you find RNA within a cell?
how many calories are in one gram of CHOs? 1g fats? 1g proteins?

2006-11-30 10:21:24 · 5 answers · asked by eun l 1

My teacher she is really bad and i hate her but im doing this element baby book on phosphorus and i dont know what she means bu circle drive lane etc.? plz help?

2006-11-30 10:16:34 · 2 answers · asked by ~*mU$t@Ng B@sEb@lL*~ 2

What is the pressure of a mixture of helium, nitrogen, and oxygen if their partial pressures are 60 mm Hg 150 mmHg and 120 mmHg.

My teacher gave us this equation:
Ptotal=P1+P2+p3

600+150+102+150=1002

so then would you divide 1002 by four to get the partial pressure of al the gases?

2006-11-30 10:14:04 · 1 answers · asked by Katie E 2

2006-11-30 10:11:27 · 3 answers · asked by zilDaisy@yahoo.com 2