Chemistry - December 2006

write out the electron dot structure of NOCl, then circle and clearly label the lone pair and the two sigma pairs on the nitrogen atom. What is the molecular geometry around the nitrogen atom.

2006-12-06 01:32:45 · 1 answers · asked by pinkpanthergirl 1

For each of the following types of hybridization, identify the types (s,p,or d) of atomic orbitals and indicate how many atomic orbitals of each type are mixed to give each of the following sets of hybridized atomic orbitals: sp2 (triangular), dsp3 (trigonal bipyramidal), d2sp3 (octahedral). Also tell how many hybridized orbitals are formed in each case.

2006-12-06 01:30:37 · 1 answers · asked by pinkpanthergirl 1

Also what would be the angles

thanks.

2006-12-06 01:27:39 · 3 answers · asked by pinkpanthergirl 1

2006-12-06 01:27:30 · 3 answers · asked by JESSE H 1

2006-12-06 01:25:07 · 4 answers · asked by JESSE H 1

2006-12-06 01:24:19 · 3 answers · asked by JESSE H 1

2006-12-06 01:10:15 · 4 answers · asked by Sofronio R 1

Final tomorrow and still can't figure it out.

3 H2SO4 + 2 Al ------> Al2(SO4)3 + 3H2

Given 700. grams of HSO4. Calculate

1. moles of H2SO4

2. moles of Al reacted

3. grams of Al reacted

4. moles of Al2(SO4)3 formed

5. grams of Al2(SO4)3 formed

6. moles of H2 formed

7. grams of H2 formed

2006-12-06 00:45:43 · 3 answers · asked by Me 2

The questions were to calculate the potential of the Cu2+ + 2e =Cu half cell consiting of a copper wire immersed in a solution which is 0.001M in Cu2+ with E=+0.3337V
The other question was calculate the potential of a platinium wire immersed in a solution that is 0.015M in KBr and 0.001M in Br2
Br2+2e =2Br- E=+1.087

2006-12-06 00:05:49 · 1 answers · asked by John Llewelyn W 1

2006-12-05 23:54:37 · 1 answers · asked by Carrie N 1

2006-12-05 23:37:42 · 4 answers · asked by asphyxia 3

2006-12-05 23:27:00 · 5 answers · asked by asphyxia 3

The balanced equation for the reaction between potassium and water to produce potassium hydroxide and hydrogen is
K + 2H2O → K(OH)2 + H2
2K + 3H2O → 2KOH + 2H2
K2 + 2H2O → KOH + H2
2K + 2H2O → 2KOH + H2

The coefficient that should go in front of O2 in the equation C3H6 + O2 → CO2 + H2O
4
5
9
8


What is the molecular mass of lithium oxide? (Remember to first make lithium oxide balanced with positive and negative charges.)
29.9 amu
22.9 amu
45.8 amu
38.9 amu

2006-12-05 22:53:57 · 4 answers · asked by calebs_baby_girl05 1

What weights of Bovine Serum Albumin (molecular weight 66,000) are required to give solutions of 10ml and 100ml volumes containing 1μmole of BSA

2006-12-05 22:47:49 · 1 answers · asked by simi 1

This reaction can be used:

PCl5 <==> PCl3 + Cl2

2006-12-05 22:37:42 · 4 answers · asked by steelrooter 2

A 1ml solution of a protein in a cuvette gives an optical density of 0.87 at 280nm. The Molar extinction coefficient of the protein is 40,000. What is the concentration of the protein in the cuvette?

2006-12-05 20:27:55 · 2 answers · asked by Anonymous

2006-12-05 20:13:14 · 4 answers · asked by fungus m 1

2006-12-05 20:06:20 · 3 answers · asked by fungus m 1

2006-12-05 20:04:22 · 7 answers · asked by Jennifer 1

2006-12-05 19:02:38 · 1 answers · asked by Anonymous

2006-12-05 17:50:57 · 6 answers · asked by Carrie N 1

2006-12-05 17:42:45 · 3 answers · asked by Anonymous

2006-12-05 17:30:04 · 3 answers · asked by hahaha m 1

If an amount of gas at 978 atm and 456 L is compressed at a constant temperature to a volume of 250 L, what is the pressure ?

2006-12-05 17:25:41 · 2 answers · asked by freemanjr2 1

4. At 25°C , the value of Kc for the following reaction is 21.

I2 (g) + Br2 (g) ® 2IBr(g)
¬

3.26 mol of I2(g) and 1.24 mol of Br2(g) are placed in a 5 L container at 25°C. What are the concentrations of the gases at equilibrium?

5. At a particular temperature, Kc for the following reaction is 3.4 x 10 -5

2CO2(g) ® 2CO (g) + O2
¬

0.97 mol of CO2 is put in a 3.0 L container. Calculate the equilibrium amount of each gas.

6. At a certain temperature, the value of Kc for the following reaction is 2.1 x 10 -9

2NCl3(g) ® N2 + 3Cl2(g)
¬

A certain amount of nitrogen trichloride, NCl3(g), is put in a 5.0 L reaction vessel at this temperature. At equilibrium, 3.1 x 10 -3 mol of N2(g) is present. What amount of NCl3(g) was put in the reaction vessel?
These are even more confusing! Oh my god so many steps. They involve Measuring Equilibrium Concentrations. The first one uses a quadratic formula, I think they all do. I tried doing #4 three different ways. First, I think the numbers are too small 0.653 mol/L for example when you try to make the Kc formula into a quadratic one eg. I think you are suppossed to have 2.0 or a larger number before the zero. 0 doesn't work becuase everything you multiply by, is itself?- maybe I should have kept going with that, but I dunno, I don't think so because then after the square root part/step(s) the positive number for x and - number is too large to figure out which one to use compared to my ICE (initial change equilibrium) chart. So then that's as far as I got. The second time I tried flipping n/v around and dividing v/n in the first step to see if that would affect the way the answer(s) turned out. I even tried putting 0.652 mol/L for example in sci. notation to see if that would make a difference, but the numbers don't work out. It's all very new to me- just frustrated, I should be able to get it!

2006-12-05 17:19:42 · 1 answers · asked by kickaburra 1

Ca++(aq) + OH-(aq) + H+(aq) + PO4---(aq) ==> Ca++(aq) + PO4---(aq) + H2O(l)

Thank you in advance for the help.

2006-12-05 17:03:20 · 1 answers · asked by Random G 3

2006-12-05 17:02:44 · 2 answers · asked by freemanjr2 1

1) Formic Acid (HCOOH)
2) Heptane (C7H16)
3) Glucose (C6H12O6)

Help is greatly appreciated!

2006-12-05 16:53:48 · 1 answers · asked by Random G 3

2006-12-05 16:10:06 · 7 answers · asked by Anonymous

2006-12-05 15:56:26 · 2 answers · asked by Bowler 1