Chemistry - December 2006

And yet, they are so much lighter. In this case bigger and heavier is most certainly not better.

2006-12-31 01:02:23 · 1 answers · asked by Mr. Peachy® 7

2006-12-30 20:45:51 · 2 answers · asked by Mr A 3

CH3-CH(CH3)-CH2-CH2OH undergoes oxidation to produce A.Then,A reacts with CH3CH2OH to produce B..what's A and B?

2006-12-30 20:29:38 · 3 answers · asked by Anonymous

2006-12-30 20:14:10 · 19 answers · asked by john d 1

I need to study a branch of chemistry that has no math and physics whatsoever (or at least very little) What branches are not related to these ?
I am not so fond of Biology either :)

2006-12-30 19:55:49 · 9 answers · asked by Anonymous

2006-12-30 19:47:24 · 5 answers · asked by smile 3

2006-12-30 19:29:24 · 10 answers · asked by skoda_styles 1

2006-12-30 19:28:45 · 5 answers · asked by Anonymous

2006-12-30 18:57:13 · 6 answers · asked by faeriepuffle 1

1.00 mL of a 3.50 x 10^–4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. How many grams of oleic acid are 5.00 mL of solution B? (molar mass for oleic acid = 282 g/mol)

2006-12-30 18:04:53 · 1 answers · asked by sunneyzwang@sbcglobal.net 2

tollen's, fehling's tests are tests for carbohydrates... :)

2006-12-30 17:46:12 · 1 answers · asked by tine 1

or water to acid, i'm not sure if it would cause an actual explosion but i heard depending on how it's mixed the two can become volatile.

2006-12-30 17:02:25 · 10 answers · asked by ........ 3

Yep, I'm asking another molar mass with mass percentage question hehe. These just always get me...

Air is a mixture of many gases. However, in calculating its "molar mass" we need to consider only three major components: nitrogen, oxygen, and argon. Given that one mole of air at sea level is made up of 78.08 percent nitrogen, 20.95 percent oxygen, and 0.97 percent argon, what is the molar mass of air?

2006-12-30 16:49:39 · 5 answers · asked by Luciya 2

1.Ethylene glycol (antifreeze) and water are completely miscible. If you mix 50 mL ethylene glycol with 50 mL water in a beaker, you will see
-two distinct layers with ethylene glycol on the bottom and water on the top
-two distinct layers with water on the bottom and ethylene glycol on the top
-one homogenous solution
-ethylene glycol droplets floating in water


2.A solution in which an undissolved substance is in equilibrium with the dissolved substance is called a(n)
-dilute solution
-supersaturated solution
-saturated solution
-unsaturated solution


3.Which of the following would not affect the rate of solution of a solid in a liquid?
-heating the solution
-shaking the solution
-grinding up the solid
-increasing the pressure on the solution


4.The formula for a hydronium ion is
-H+
-H3O+
-OH–
-HO+


5.Lewis defined an acid as a(n)
-proton acceptor
-proton donor
-electron pair acceptor
-electron pair donor

2006-12-30 16:44:41 · 2 answers · asked by calebs_baby_girl05 1

2006-12-30 16:26:20 · 8 answers · asked by Ryoma Echizen 3

2006-12-30 16:24:59 · 7 answers · asked by Ryoma Echizen 3

a. the same as the boiling point of the solvent.
b. the same as the boiling point of the solute.
c. higher than the boiling point of the solvent.
d. lower than the boiling point of the solvent.

Can you also explain why the answer is so? Thanks.

2006-12-30 15:56:20 · 7 answers · asked by tom r 1

2006-12-30 15:27:26 · 3 answers · asked by Maria Analiza B 1

2006-12-30 15:15:44 · 4 answers · asked by tom r 1

Explain how a solution can be both dilute and saturated. Thanks.

2006-12-30 15:11:42 · 4 answers · asked by tom r 1

What is the clinical significance of a positive Benedict's test in a fasting urine sample? What other confirmatory tests can be done to confirm this pathological condition?

2006-12-30 15:05:37 · 2 answers · asked by igeeh 1

2006-12-30 15:02:07 · 2 answers · asked by alien_shan 1

2006-12-30 14:21:28 · 11 answers · asked by yahooanswers 3

This theory is used in chemistry.

2006-12-30 14:20:37 · 5 answers · asked by sagar G 1

Please explain with details.

2006-12-30 13:59:40 · 15 answers · asked by Sam's Club 1

Correct me if I'm wrong, but if you have an amount of Carbon-14, it will decay at a constant rate. How can someone determine the age of something without knowing the starting amount of Carbon-14? If they are just guessing at the starting amount, by the transitive property wouldn't they just be guessing the age?

2006-12-30 13:58:25 · 5 answers · asked by nathan_b37 2

okay so I have a bunch of homework questions like this, and I need to see one example done out to understand. can someone explain the process?
CaO(s) + 2HCl(aq) --> CaCl2(aq) + H2O(l)


For the reaction given above, calculate the mass of each product formed
if 12.5g of the first reactant is combined with 10.0g of the second
reactant. Indicate which substance is the limiting reactant for each case.

2006-12-30 13:28:15 · 2 answers · asked by Colleen 1

What happens when you melt a candle? As in, what happens to the wax where does it disapate to?

2006-12-30 12:48:52 · 4 answers · asked by chelichik 1

2006-12-30 12:11:44 · 13 answers · asked by stingbott 2

The aluminum sulfate hydrate [Al2(SO4)3 x XH2O] contains 8.20 percent Al by mass. Calculate X, that is the number of water molecules associated with each Al2(SO4)3 unit.

2006-12-30 12:11:24 · 2 answers · asked by Luciya 2