Chemistry - March 2007

I just wanted to organize my thoughts, and confirm my thoughts.

Order of Bond strength (Largest to Smallest) (I think)

Ionic Bond>Polar Covalent Bond>Covalent Bond>Dipole-Dipole Attraction>London Dispersion Forces


and where would Hydrogen Bonds and Metallic Bonds belong? I think Hydrogen bonds are the strongest... is it?

2007-03-10 08:31:34 · 2 answers · asked by myway061 1

I need help. I want to build a simple rocket.
Building the rocket is the easy part- i need to know the ingredients to making rocket fuel out of things that aren't that expensive, illegal, or hard to find. post websites or formulas please

2007-03-10 08:30:04 · 3 answers · asked by Dan 1

The total molarity of acid and conjugate base in this buffer is 0.1 M. A student adds 8.00 mL of a 0.280 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.76.

Please show your work. Thank you!

2007-03-10 08:14:42 · 2 answers · asked by ANON 1

2007-03-10 08:10:31 · 2 answers · asked by mina moo 1

two questions

what is the concentration of a 100. mL aqueous solution that contains 1.00 g KCL (molor mass = 74.55)




andwhich of the following is soluble in water
a)potassium nitrate
b)silver
c) benzene
d) carbon tetrachloride

2007-03-10 08:08:37 · 3 answers · asked by Anonymous

2007-03-10 08:06:23 · 4 answers · asked by Anonymous

0.105 L of 0.105 M HCl and 0.100 L of 0.125 M sodium acetate.

Please show your work. Thank you :)

2007-03-10 08:05:36 · 2 answers · asked by ANON 1

3) In the first step in the production of sulfuric acid, sulfur is burned in the air to produce sulfur dioxide. How many moles of oxygen are required to react with 160 g of sulfur.

4) How many moles of hydrofluoric acid may be produced by the addition of sufficient sulfuric acid to 7.81 g o solid calcium fluoride?

*Could I have the steps and explanation please. I really don't understand.

Thank you so much.

2007-03-10 08:04:29 · 2 answers · asked by kickitup21 1

A. it gives off heat
B. its temperature rises
C. its temperature falls
D. it absorbs heat

2007-03-10 08:03:06 · 6 answers · asked by Anonymous

2007-03-10 08:03:01 · 2 answers · asked by Anonymous

How can one be polar but not overall dipole? Thanks

2007-03-10 08:02:17 · 3 answers · asked by Anonymous

I am really confused so any one that helps would really be my guardian angel...thanks for your time

2007-03-10 07:59:42 · 3 answers · asked by Anonymous

a) HClO4 and Cl -
b) KOH and OH -
c) NH4+ and NH3
d) H3O+ and H2O
e) HCN and CN -

2007-03-10 07:56:45 · 2 answers · asked by Anonymous

2007-03-10 07:15:50 · 3 answers · asked by 海~ELFishy 2

1) What are the four pairs of elements in which mass does not increase as the atomic number increases?

2) Does the mass of the elements increase as the atomic number icreases?

3) What is the largest number of protons any element has?

2007-03-10 06:42:06 · 1 answers · asked by watwilliswastalkinbout 2

2007-03-10 06:38:50 · 3 answers · asked by Jodi P 1

2007-03-10 06:13:58 · 6 answers · asked by dazylhou 2

2007-03-10 06:11:06 · 2 answers · asked by Joseph Z 1

2007-03-10 06:07:01 · 1 answers · asked by Steenskees 2

2007-03-10 05:55:37 · 4 answers · asked by Anonymous

I have a ring made of tungsten carbide, given to me by my girlfriend. I never take it off, except in the shower because I was afraid that it might rust. Since I know that tungsten carbide has a very high melting point and it will never scratch, I was just wondering if it could rust.

2007-03-10 05:47:59 · 5 answers · asked by Бог Посылает Конспиратору 1

2007-03-10 05:42:04 · 12 answers · asked by donna_isabella2000 1

1) What mass of sodium metal must react with water to produce 0.540 mol of hydrogen gas? (Recall the rule for the formula for water in single and double replacemtn reactions to help you with this equation.)

2) What mass of calcium carbonate will be produced by the reaction of 0.962 mol of calcium hydroxide with carbon dioxide to produce calcium carbonate and water?

3) In the first step in the production of sulfuric acid, sulfur is burned in the air to produce sulfur dioxide. How many moles of oxygen are required to react with 160 g of sulfur.

4) How many moles of hydrofluoric acid may be produced by the addition of sufficient sulfuric acid to 7.81 g o solid calcium fluoride?

*Could I have the steps and explanation please. I really don't understand.

Thank you so much.

2007-03-10 05:33:23 · 2 answers · asked by kickitup21 1

This is a bonus question for an up-coming exam, and I have been searching for a clear explanation of how to calculate the average...anyone know???

2007-03-10 05:27:31 · 3 answers · asked by Anonymous

2007-03-10 05:16:46 · 3 answers · asked by linifer74 1

I have few ionic equations I don't understand. Can you help me with some explanation?

1.Lead nitrate + potassium iodide
2.Hydrochloric acid + sodium hydroxide
3. zinc metal + hydrochloric acid
4. Copper wire + silver nitrate


Thanks..

2007-03-10 05:03:44 · 1 answers · asked by htsj14 2

citric acid tablets for testing nitrate in water

2007-03-10 05:02:16 · 1 answers · asked by Preeti D 1

citric acid tablets for testing nitrate in water

2007-03-10 05:00:14 · 2 answers · asked by Preeti D 1

i did some googling.. and i found out that tin only has a melting point of 400 degrees F and i was wondering how i get tin, and if tin are purely tin cans (like the ones you get peaches in) and if i can use tin cans or are they alloys?

2007-03-10 04:52:58 · 1 answers · asked by austinblnd 4

Describe how an understanding of chemical reactions has led to the development of new consumer products or technological processes.

2007-03-10 04:42:47 · 2 answers · asked by Anonymous