Chemistry (Science & Mathematics) - December 2006

Calculate the mole fraction of liquid A in a mixture of two liquids, A and B, which has a total pressure of 29,0kPa, given that A and B form an ideal solution.
[Vapour pressure: A=15.0kPa, B=35.0kPa]

2006-12-25 17:31:26 · 2 answers · asked by Adrianne G. 2

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What ingredient(s) in Louisiana hot sauce dissolve coins?

A bottle of Louisiana hot sauce accidentally froze and broke spilling the contents into a coin tray. A Canadian Loonie (1$ coin) was encased in the hot sauce ice. Upon thawing the hot sauce turned green (Cu?) and the face of the coin was erased. Answers from Louisiana appreciated.

The hot sauce came from a patent agent that I have business with. Should I find another agent ;->?

2006-12-25 17:06:55 · 3 answers · asked by d/dx+d/dy+d/dz 6

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heat transfer, forced convection...?

how does it affect the system if the fluid is laminar or turbulent?

2006-12-25 17:05:13 · 1 answers · asked by alex05mx 2

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How hydrolysis can take place to form an acidic solution when AlCl3 reacts with water?

this was what my notes says:

AlCl3(s) + 6H2O(l) --> [Al(H2O)6]3+(aq) + 3Cl-(aq)

[Al(H2O)6]3+ (aq) --> [Al(H2O)5(OH)]2+ (aq) + H+ (aq)

Al3+ has high charge density, able to polarise and weaken O-H in H2O of [Al(H2O)6]3+(aq) to release acidic H+.

!!!!! can someone kindly elaborate more?

also... how Al3+ is produced? i cant see it in the equations...
what is high charge density?
what is hydrolysis?

thx... thx...

2006-12-25 17:01:02 · 3 answers · asked by Anonymous

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is this possible? CaO + SiO2 --> CaSiO3. why?

can u also answer this,

can a basic oxide react with an acidic oxide?

if yes, what are the products? and is there any exceptions?

if no, why?

thx alot :)

2006-12-25 16:46:26 · 5 answers · asked by Anonymous

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what materials/elements are most houses made up of?

i know there's wood, copper, porcelain, and glass. is there anything else?

2006-12-25 15:26:07 · 4 answers · asked by Linda 3

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At room temperature, what is the physical form(s) of polyphenylene-ethylene?

2006-12-25 14:45:00 · 1 answers · asked by adam lim 1

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Why is the freezing point of water 32 degrees? Why not 33 or 46 degrees?

2006-12-25 14:39:43 · 16 answers · asked by Jerry P 1

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how would the accuracy of your determined equilibrium constant expression change if all your volume measure?

how would the accuracy of your determined equilibrium constant expression change if all your volume measurements were made with graduated cylinders rather than pipets?

2006-12-25 14:27:42 · 3 answers · asked by Nicole J 1

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How do i prove that an egg shell is made from calcium carbonate?

2006-12-25 14:19:26 · 6 answers · asked by Jolene 1

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what do you mean by ph?

2006-12-25 14:17:50 · 7 answers · asked by achal d 1

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Why oxygen is transferred in gas form? Why can't we transfer in liquid form? Any pitfalls. Need your help.

2006-12-25 14:08:26 · 10 answers · asked by Segar g 1

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What is something cool I can do at my house with muriatic (hydrochloric) acid without killing myself?

ie put random metals in, mix with something

2006-12-25 13:34:54 · 7 answers · asked by carr0t 1

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Who invented soap?

2006-12-25 13:10:24 · 8 answers · asked by Alwyn C 5

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Would a random drug screen at work differentiate between Xanax and Valium?

I asked this question in the health section and never got a really clear answer so I figured I'd ask it here. I assume the testing is done per NIDA standards. I have a Rx for Xanax but not for Valium. If I got tested would the test distinguish between the 2 drugs or would it simply come back positive for benzodiazepines?

2006-12-25 11:17:06 · 0 answers · asked by Anonymous

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which is a stronger electrolyte?

can someone show me how to use the data to solve this problem? Thank you so much.

When 10.0 g of mercuric nitrate, Hg(NO3)2 is dissolved in 1.00 kg of water, the freezing point of the solution is -0.162 C. When 10.0 g of mercuric chloride, HgCl2 is dissolved in 1.00 kg of water, the solution freezes at -0.0685 C. Use these data to determine which is the stronger electrolyte, Hg(NO3)2 or HgCl2.

2006-12-25 11:16:32 · 5 answers · asked by Rain 2

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I need these chemical equations Balanced...?

8. Ammonium chloride, NH4 Cl, reacts w/ calcium hydroxide, Ca(OH)2, to form calcium chloride (CaCI2), ammonia (NH3 ), and water. Write balanced equation for this reaction
9. Zinc reacts w/ hydrochloric acid, HC1, to form zinc chloride, ZnCL2, & hydrogen gas. Write balanced equation for this reaction
10. Fluorine reacts with sodium chloride, NaCI, to form sodium fluoride, NaF, & chlorine. Write the balanced equation for this single-displacement reaction(Hint: Remember that both fluorine & chlorine have two atoms per molecule when they are in elemental form
11. Calcium oxide, CaO, reacts w/ sulfur dioxide to form calcium sulfite, CaSO3 Write the balanced equation for this synthesis reaction
12. In air, calcium sulflte, CaSO3, reacts slowly w/ oxygen to form calcium sulfate, CaSO4. Write the balanced equation for this reaction

2006-12-25 10:19:03 · 6 answers · asked by truckin_90 2

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