Chemistry - November 2006

Rank the following in order of increasing boiling point.

Ne
CH3CN
CH3OH
CH3Br

2006-11-21 05:00:08 · 3 answers · asked by kbafc 1

then answer that what is odor less taste less colorless gas lightest of all elements

2006-11-21 04:52:41 · 2 answers · asked by Anonymous

At a local convenience store, you purchased a cup of coffee but, at 98.4 Degrees Celcius, it is too hot to drink. You add 23.0g of ice that is -2.2 Degrees Celsius to 248 mL of the coffee. What is the final temperature of the coffee? (assume the heat capasity and density of the coffee are the same as water and the coffee cup is well insulated.)

2006-11-21 03:58:03 · 4 answers · asked by ==== 3

I have a question on a problem, it starts out as "Can H(+)(aq) oxidize Sn(s)" I said yes and wrote the following equation

2H(+)(aq) + Sn(s) <---> Sn(2+) + H2

the next part says find the Ecell. Which i found to be .1364V because E(reduction H+) = 0v and E(oxidation Sn) = .1364V.

The next part asks to find the Ecell if the Ph is 5.39 and both the H2 and Sn(2+) concentrations are 1.5M. Would I use the Nernst equation to find this out?

Thanks

2006-11-21 03:57:25 · 1 answers · asked by Howard 1

For a science fair project.

2006-11-21 03:55:32 · 13 answers · asked by Brittany F 1

2006-11-21 03:06:22 · 3 answers · asked by Slim 1

chemistry homework..i can't seem to find the formula in the textbook.:(

2006-11-21 02:38:01 · 4 answers · asked by dolly m 2

Is that chemical poisonous? I read an article about an alleged assasination attempt of a Russian agent. Can that toxic disappear from his body? Is that deadly?

2006-11-21 02:34:29 · 5 answers · asked by Sandy 2

I think it is O2- , is this right?

2006-11-21 02:24:12 · 10 answers · asked by steven11111958 1

2006-11-21 02:03:48 · 3 answers · asked by steven11111958 1

well it didn't include all of the question so...
How much heat (in calories) must be applied to a 100 ml beaker filled with boiling water in order to vaporize the water?

2006-11-21 01:31:01 · 4 answers · asked by karyn823 1

2006-11-21 01:18:23 · 10 answers · asked by Anonymous

Assuming that a small swimming pool contains 5000 liters of water. In order to prevent the growth of algae and sanitized the water, the pool maintenace used in 1.5ppm of chlorine per weekly application. How much amount of chlorine is needed monthly?

2006-11-21 00:17:57 · 4 answers · asked by killer 1

2006-11-21 00:01:15 · 4 answers · asked by starreyes2000_2000 1

2006-11-20 23:49:47 · 5 answers · asked by <3 3

2006-11-20 23:43:21 · 3 answers · asked by *yawn* 2

Please show your solutions...

An infant formula is often prepared from evaporated milk. In 1992, it was reported that canned evaporated milk contained up to 3.2ppm of lead. At this concentration, how many grams of lead are present in 8 oz or 470ml of evaporated milk?

2006-11-20 23:34:27 · 2 answers · asked by killer 1

2006-11-20 23:33:47 · 3 answers · asked by Anonymous

trying to devise a practical using bromine to pass through goretex and not other materials for new gcse science course!

2006-11-20 22:31:35 · 5 answers · asked by spikeyd 1

Choices:

1) helium
2) berylium
3) nitrogen
4) neon

Proof please

2006-11-20 22:23:34 · 1 answers · asked by Anonymous

Stationary phase and mobile phase are terms in High Pressure Liquid Chromatography.

2006-11-20 21:24:10 · 4 answers · asked by Anonymous

we prepared ethyl acetate in our lab.afterwards we washed it with water then with cacl2(aq) then with cacl2 granules.i know that the anhydrous granules eliminates water,but how about in the case of using aqueous calcium chloride

2006-11-20 21:07:15 · 2 answers · asked by aspiring chemist 1

about chemistry

2006-11-20 21:02:10 · 5 answers · asked by Anonymous

2006-11-20 20:46:27 · 2 answers · asked by manendupahariya 1

Thanks.

2006-11-20 18:50:47 · 2 answers · asked by Anonymous

2006-11-20 18:23:44 · 1 answers · asked by satya n 1

Q: The density of diamond is 3.51 g/cm^3. What is the volume of 1 mole of carbon in this form?

My Approach:

3.51g/cm^3 x (1mol C/12 g C) = .293 mol/cm^3

1 mol/ .293 mol/cm^3 = 3.41 cm^3 <----my answer

I might be wrong about how may C's a diamond has...please someone confirm if im right!!! thanks appreciate it

2006-11-20 17:54:14 · 2 answers · asked by Anonymous

For the reaction


NH3 + O2 → NO + H2O

2006-11-20 17:36:49 · 4 answers · asked by g G 1

A certain compound was found to have a molar mass of 32.042 g. A 4.078 g sample of this compound was burned in pure oxygen gas. The measured amount of CO2 produced was 5.601 g, while that of H2O was 4.586 g. No other products were produced in the reaction.

2006-11-20 17:35:30 · 2 answers · asked by g G 1

More soluble than covalent substances.

2006-11-20 17:32:30 · 5 answers · asked by geniusflightnurse 4