how we can manufacture the DNA?(in laboratory)...
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I bought a 80g x 0.01g scale from ebay and it came with a 50g weight. Now this weight is exactly 50g up to more than 1mg, I suppose? But when I put in on, it read 50.08g. So the scale is off it seems....
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1. Consider a stoppered flask containing benzene, iodine, and air, which has reached equilibrium at 298K. Which one of the following statements converning the system at equilibrium is true?
a) The pr...
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Hi everyone
I need some help with this problem -
The first order rate constant for the decomposition of N2O5 at 70 degrees celsius is 6.82x10-3 s-1
2N2O5 -> 4NO2 +O2
Suppose we start wi...
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I have this compound of bismuth that when it is room temp it is green and when it is hot it turns yellow then maroon (dark red). I prepared it by melting bismuth then stirring (while melted in air) un...
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This is just a general question that I hope someone can answer.
Why do we add alkali before extraction rather than afterwards???
This is in the experiment I recently did, which was the preparation o...
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The reason I'm asking this elementary question is that I have, now for three years running induced oxygen into my 32"deep x 16' OD fish pond. What I've found is that when I introduce the atomized...
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Dear Forumers,
Can anyone help me?
I need information about the hydroylsis of SDS (sodium dodecyl sulphate).
Dodecanol forms from SDS, is it true?
Thank you very much in advance!
T. the ...
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Is a diamond a single molecule?...
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Is the Crystal field activation energy and Crystal Field stabilisation energy the same thing? I've been looking all over the textbooks but I can't a good explanation for the former....
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Which of the following is an INCORRECT interpretation of the balanced equation shown below?
2S(s) + 3O2(g) ----> 2SO3(g)
a.) 2 mol S + 3 mol O2 ----> 2 mol SO3
b.) 2 atoms S +...
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I would like to know what happens when a nitrate is added to sulfuric acid. ex. KNO3 plus H2SO4 what does that yield....
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Yesterday, I found Auerbach's Wilderness Medicine [http://www.amazon.com/Wilderness-Medicine-5th-Paul-Auerbach/dp/0323032281]> text, which is aimed towards producing effective medical professionals wh...
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Since there is 50% to produce either of the alcohol or carboxylic acid from 1mol of Aldehyde, does that mean when we calculate the %yield of either product we need to divide the mol of aldehyde by 2 s...
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Hi all,
Please explain to me what methanol R is. What is the difference of methanol R and methanol?.
Thanks...
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I am new to this ... I mean forums never done it before so bear with me.
Need help with this chem question
A 40 g ice cube at 0.0C is dropped into %00ml of water at 30C. Assuming the ice melts compl...
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Hey all, I was just wondering if anyone can suggest a kind of glasswear that can withstand very high pressure.
thanks all:)...
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I just read my latest "Material Matters" issue from Sigma Aldrich. One story relates to the storage/production of hydrogen using liquid "fuels". These fuels contain easily oxidiz...
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how are they done at the college level? I would relaly like to compare actualy college level lab reports to my AP chemistry level lab reports. I know that they are usually done in pen and paper, but i...
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Is there a quantitative test for the amount of sulfur dioxide in orange juice. Nothing too complicated, im only in year 11. Can it be done using titration?...
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Supose we titrate Acetic acid with Sodium hydroxide. When acetate ion begins his hydrolyzation?
-Immediately after titration begins?
or
only when all initial acetic acid is ionizaed and titrated?...
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Is it correct to talk about a "Neutralization Reaction" when we make a titration of a weak acid with a strong base, or it is only correct if we titrate a strong acid with a strong base or a ...
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Hi! Does anywone knows what happen with ammonia adsorption at pressures of 1-15 bar? thanks....
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Why amonia NH3 in water acts as a base and not an acid?
Thanks...
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What are the products when Pepto-Bismol and HCl react together.
I know a salt and water.
But what exactly?
I beleive pepto bismol is C7H5BiO4
So C7H5BiO4 + HCl --> ???...
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