Chemistry - March 2007

2007-03-06 13:29:25 · 3 answers · asked by Anonymous

To make the antibody be diluted 1:300 in 150 ml of 0.1X reagent

2007-03-06 13:22:37 · 1 answers · asked by Anonymous

a. electrons
b. H+ ions
c. O2- ions
d. O2 molecules

2007-03-06 13:21:14 · 1 answers · asked by Anonymous

2007-03-06 13:15:23 · 3 answers · asked by disoneguy300 3

Are exsolution and ordering mutually exclusive phenomena when describing phase transitions in mixed systems?

2007-03-06 13:03:19 · 1 answers · asked by qwerty 1

A solution is prepared by adding 750.0 mL of 4.00 x
10-3 M Ce(NO3)3 to 300.0 mL of 2.00 x 10-2 M KIO3.
Will Ce(IO3)3 (Ksp= 1.9 x 10-10) precipitate from this
solution?

2007-03-06 12:52:12 · 1 answers · asked by chopololo 1

I made a graph using my titration. Using my results I have to calculate the number of moles "initially" present. Then I have to calculate the concentraion of acetic acid in the original acetic acid solution that I used.

2007-03-06 12:43:41 · 2 answers · asked by Anonymous

a voltaic cell is constructed by immersing a strip of lead in a 1.0M Pb(NO3)2 solution and a strip of cadmium metal in a 1.0M Cd(NO3)2 solution. the circuit is completed by a wire and a salt bridge in the usual way.

1. write the balanced overall cell reaction.
2. what is the cell potential for the voltaic cell described above?
3. write the balanced half-reaction that is occurring at the anode?
4. write the balanced half-reaction that is occurring at the
cathode?

5. what would be the potential of the cell if it was modified to use a
0.10M Pb(NO3)2 solution and a 0.20M Cd(NO3)2 solution
instead?

2007-03-06 12:36:31 · 1 answers · asked by a.n. 1

2007-03-06 12:25:16 · 3 answers · asked by ishx360 1

2. Iron (III) oxide and carbon dioxide gas
3. Solid calcium carbonate is strongly heated
4. sulfur trioxide gas is added to excess water
5. carbon disulfide vapor is burned in excess oxygen
6. samples of boron trichloride gas and ammonia are mixed
7. sulfur dioxide gas and water

Any help with any of these chemical equations will be greatly appreciated. Thank you.

2007-03-06 12:23:18 · 2 answers · asked by j a 1

im doing a science report and i need to know some stuff about berilluym

2007-03-06 12:18:48 · 3 answers · asked by motox dude 2

I 'm just wonderin, and if u could give me a scientific reasons, like the chemical reactions and etc.

2007-03-06 12:16:26 · 2 answers · asked by Anonymous

2007-03-06 12:14:28 · 1 answers · asked by Fabian B 1

2007-03-06 12:09:12 · 1 answers · asked by vel 1

Making soap from animal fat on my farm with K2CO3 (ash water), giving fatty acids. My plan is to take half the amount of fatty acid and treat it with a reducing agent to give a primary alcohol (not a terminal carbonyl). Reacting this with the other half would synthesize alkyl ester (candle wax)!

2 triglyceride + (xs) K2CO3 → 6 fatty acids

3 fatty acids + R. AGENT → 3 alcohol chains

3 fatty acids +3 alcohol chains → wax!

From what can I extract or synthesize a strong reducing agent. I needs to be readily available..(like in the wood, NOT in a mining cave 1km under crust, NOT from the urine a wakitashi only living on Taolirilo island...) something I can growth or (if its coming from an animal source) that I can raise.

Not certain of the above reaction, inform me of any problems. Alkyl ester has a relatively high m.p. (10-20C over RT) but, I don’t know if the degree of unsaturation will affect it. What are the side reactions and by-products? Any other relevant informations

2007-03-06 12:06:55 · 2 answers · asked by randomdestination 2

2007-03-06 11:35:21 · 4 answers · asked by Anonymous

If Copper reacts with Sulfur and gets one product, what's the formula look like? Thanks for your help!

2007-03-06 11:34:02 · 2 answers · asked by Dana Mulder 4

2007-03-06 11:29:29 · 8 answers · asked by Anonymous

Second question is, What bond is formed when opposite charges come together? I am confused between the two questions being so similar, what is the answer to both of them? I think the second question is an ionic bond, is the first question the same answer?

2007-03-06 11:23:32 · 2 answers · asked by Anonymous

2007-03-06 10:59:51 · 2 answers · asked by se_agaupou 2

For each of the following situations, tel me the identity of the gas produced from the information given and write a balanced chemical equation that represents the reaction.

1. When potassium bromate (KBrO3) is heated, it decomposes into potassium bromide (KBr) and a gas that supports the combustion of a glowing splint.

2. Sodium metal reacts violently with water to produce sodium hydroxide (NaOH) and a gas that “pops” in the presence of a burning splint.

3. The recipe for the volcanic eruption used in many science projects is the reaction of baking soda (NaHCO3) and vinegar (CH3COOH). When these compounds are mixed together, the salt sodium acetate (NaCH3COO) is formed as well as a gas that extinguishes a burning flame and a substance that turns blue cobalt chloride paper pink.

2007-03-06 10:51:34 · 3 answers · asked by ?-? 1

for small atomic number, it is when the number of neutrons is approximately equal to the number of protons.. (p = n)
but what for large atomic number.???

2007-03-06 10:49:13 · 1 answers · asked by Anonymous

What's a white powder that has a large grain appearance, grainy texture, no smell, soaks up water, turns orange in iodine, and becomes cloudy when five grams of it is mixed into twenty-five milliliters of water? I was thinking cornstarch or baking soda... Thanks.

2007-03-06 10:47:56 · 2 answers · asked by Anaklusmos 2

Which of the following substances would you expect to dissolve in water?

a) HCl

b) CH3OH

c) CS2

d) C (diamond)

e) CH3CH3

2007-03-06 10:36:06 · 3 answers · asked by Russell M 1

Why or why not?

2007-03-06 10:31:35 · 5 answers · asked by Carm12 2

could you explain this please? thanks

2007-03-06 10:31:31 · 2 answers · asked by Randy 1

Let's say you have a container filled with exactly 1L of pure H2O. That water is then completely electrolyzed to produce 2 parts H2 gas and 1 part O2 gas. If then those gases, still in the same 1L container, are combusted, will the result of combustion, besides heat, produce that original 1L of water?

2007-03-06 10:23:13 · 1 answers · asked by dangerthird 2

2007-03-06 10:21:45 · 5 answers · asked by ulonda f 1

there's suppose to be generally only two kinds, gas and ______.

2007-03-06 10:14:54 · 1 answers · asked by 100%angelic 3

If the oxidation of an element changes from 2- to 0 during a reaction it has gained or lost how many electrons?

2007-03-06 10:11:52 · 2 answers · asked by William R 1