Chemistry - May 2007

It's in my coconut milk and I'm wondering if my coconut milk is retaining its natural properties with this ingredient in it.

2007-05-19 06:21:03 · 2 answers · asked by Erutpar 1

What is it about sodium chloride that causes this effect?Is this effect the same for all sodium chloride solutions,regardless of concentration?Did supercooling affect it?Is it possible that the solution did actually freeze in some of the runs?Why cryoscopy not a commonly used method of molar mass determination in modern chemistry?

2007-05-19 04:06:26 · 2 answers · asked by Anonymous

2007-05-19 04:06:22 · 2 answers · asked by subrahmanyeswara sharma i 1

What is it about sodium chloride that causes this effect?Is this effect the same for all sodium chloride solutions,regardless of concentration?Did supercooling affect it?Is it possible that the solution did actually freeze in some of the runs?Why cryoscopy not a commonly used method of molar mass determination in modern chemistry?

2007-05-19 04:05:27 · 1 answers · asked by Anonymous

I dissolved and precipitated gold in aqua regia. Then took the brown gold oxide to a blower. He used a kerosene gas with an oxygen air compressor. He added some borax. When it all melted the gold became now shiny black gold instead of yellow. I think the flame was too oxidized They normally use that blower to melt yellow gold dust. Didn't work for me. Is there another way like electrolysis or something or if I use now an acetlyne torch with a reducing flame am I going to get the same bad results???

2007-05-19 03:23:10 · 1 answers · asked by Yar 1

I no a product is iodine... what about the half equations, then full equation?

2007-05-19 00:53:58 · 4 answers · asked by Anthea G 1

can someone please explain to me what is an ion and how does it become an ion

2007-05-18 19:11:48 · 5 answers · asked by Anonymous

I was wondering, in the process of Biodiesel production what is it that they do during each step? I've reaserched using Wikipedia, but I can't really understand what it says (basically because I'm a 15 year old without any knowledge or Chemistry...yet XD).

Anyways in the page it says that the steps are:
1. Purification
2. Neutralization
3. Transesterification (this is the one I REALLY don't understand)
4. Workup

2007-05-18 18:26:33 · 2 answers · asked by Anonymous

if 6.02x10^23 molecules of N*2 react to the equation N*2+3H*2-> 2NH*3, the total number of molecules of NH*3 produced is....


i got 2.00...:/

2007-05-18 18:04:05 · 4 answers · asked by Anonymous

magnesium was reacted with an excess of dilute hydrochloric acid and the hydrogen gas produced collected in a eudiometer. aThe volume of hydrogen in eudiometer was corrected to conditions of STP. If 94.1 millileter of hydrogen was produced, how much magnesium reacted in this experiment?

i'm stuck...and how can i practice with these kinds of problems/? i need to know it for final in 3 weeks so i have time to learn

2007-05-18 18:01:32 · 4 answers · asked by Anonymous

Please help me with that question, giving the way and explain :'(

Thank you,
Ng Yut Sei

2007-05-18 17:52:30 · 4 answers · asked by NG Yut Sei 1

What exactly is it and where can it be found in?

2007-05-18 17:17:18 · 5 answers · asked by antwon 1

What errors in concentration are introduced when only dilution is taken into account by using only dilution equation- M1V1=M2V2

2007-05-18 17:09:11 · 3 answers · asked by Alan l 1

I have searched all over the web for this info, but i can't seem to find it. I need to know why does the human body need the element hydrogen? And how does it help the human body? I need to know by Monday GMT +10h (Australian Eastern Standard Time).

2007-05-18 16:47:05 · 10 answers · asked by Matt R 2

I asked the products from a Sulfuric Acid + Sodium Bicarbonate reaction, and from that was able to obtain the rest of the stoiciometry of the problem, but near the end, was a question pertaining to how it would react in a different situation.

If I spilled Sulfuric acid on a labratory floor, and tried to neutrilze the spill with baking soda, would it take more or less baking soda to neutralize the spill, if it had been made on bare concrete?
Thanks in advance!

2007-05-18 16:23:27 · 1 answers · asked by ovenmits1 2

2007-05-18 16:16:47 · 2 answers · asked by Anonymous

If 12,0 g is allowed to react with each of the 3 reactants, I know that Na2CO3 is the limiting agent. Then, if 0.226 moles of 2NaCN is produced from this equation, how many grams of C and N left unreacted??? Please give ur way... I am totally blur with this. Thank you... (answer: c=6,58 g and N2 = 8.85g)

2007-05-18 15:50:34 · 3 answers · asked by NG Yut Sei 1

Crayon companies recommend treating wax stains on clothes by spraying them with WD-40 lubricant, applying dishwashing liquid, and then washing them. Explain Why.

I don't know how to explain this. I keep looking things up for it and still don't under stand, if you know a good website please tell me. I need a chemistry type answer. If you can help me I would appreciate it.

2007-05-18 15:46:09 · 3 answers · asked by Anonymous

When 3 L of hydrogen gas (H2) reacts with 1 L of nitrogen gas (N2), 2 L of gaseous product are formed. All volume and gases are measured at the same temperature and pressure. What is the formula of the product? Pls help anyone. Thanks

2007-05-18 15:32:56 · 2 answers · asked by Stewie 2

In the average adult human, there are approximately 2.6 *10^13 red blood cells with a total of 2.9 grams of Iron. On average, how many iron atoms are present in each red blood cell? Thanks

2007-05-18 15:02:55 · 3 answers · asked by Giant Donut 2

basically, what does neutralizing a solution do?

2007-05-18 14:33:49 · 2 answers · asked by grace is good for you 2

2007-05-18 14:14:25 · 2 answers · asked by erika 1

I had a cheap plastic spray bottle that I kept by the kitchen sink. About a 50/50 solution of bleach and water. When I spray from the bottle, the bleach water sprays out black. The bottle conked out & I disassembled it & it seemed the bleach only came into contact with the plastic. I replaced the cheap plastic bottle with a brand new spray bottle and the bleach and water mixture still sprays out tinted black. What causes this? it is rather disconcerting to clean my sink and counters with black bleach. Thanks

2007-05-18 14:11:32 · 2 answers · asked by hidesimple 2

It's a salt, but I dont know which one, can someone help me out?

2007-05-18 14:11:09 · 1 answers · asked by Anonymous

2007-05-18 14:01:30 · 3 answers · asked by ixat02 2

Hey, I'm a Biology major going into pre-med. I'm about to go into organic chemistry. Can anyone give me a "heads-up" as to what to expect from the course? Also, is there a such thing as a Biology major that isn't so good in math? Thanks for the help.

2007-05-18 13:49:01 · 6 answers · asked by Anonymous

Is there a chemical or something that can destroy salt?

2007-05-18 13:47:21 · 5 answers · asked by Anonymous

Could I get a little help with the follow few questions?

What will be the final product?

1) 236/92 U --> 90/38 Sr + 3 1/0 n + ____

My guess for this one is 146/54 Xe

2) 27/13 Al + 4/2 He --> 30/15 P + ______

My guess would be 1 1/0 neutron?

3) 235/92 U + n --> Xe-143 + 3 1/0 n + _______

I am pretty sure it is 90/38 Sr.

Anyhow. I would appreciate any assistance, and if my initial answers are wrong, I'd like a little clarification.

2007-05-18 13:31:13 · 2 answers · asked by Ajax J 2

You know how you always have those little bitty unuseable peices, how do I melt them down to make one bar?

2007-05-18 13:23:51 · 8 answers · asked by Anonymous

By the way, has anyone ever boiled a metal or solidified a noble gas?

2007-05-18 12:39:33 · 5 answers · asked by Jamie D 2