254 posts tagged with chemistry.
Displaying 201 through 250 of 254. Subscribe:

Stop the maddness.

Isn't "Tea Tree Oil" merely fancy marketing-speak for turpentine from a specific type of tree?
posted by Fupped Duck on Aug 1, 2007 - 6 answers

Bleach doesn't always work?!

I sat in bleach. Why didn't it turn my chair white? [more inside]
posted by rossmik on Jul 12, 2007 - 4 answers

Advice for starting a tenure track science job.

NewAcademicJobFilter: What did/should you do, to start off a new academic job at a new institution and do it right? Lab? Colleagues? Students? People to know? Actions to take? How did you leave your own institution? [more inside]
posted by lalochezia on Jul 3, 2007 - 6 answers

Help me with this Organic Chemistry doozie.

Organic Chemistryfilter: In H NMR spectroscopy, why is it that as a carbon is more substituted, it is also more shielded? Better explanation inside. [more inside]
posted by Paul KC on Jun 20, 2007 - 9 answers

Test for presence of blood

For obscure journalistic reasons, I need to determine whether a sample of liquid contains blood. [more inside]
posted by johngoren on Jun 1, 2007 - 11 answers

Ion Exchange

I'm looking for a source for ion exchange resin membranes. [more inside]
posted by killermac on May 21, 2007 - 5 answers

For want of a U-Tube

My lab is running low on U-tubes...what can I use in place of a U-tube/porous cup for a salt bridge in a voltaic cell? [more inside]
posted by The Coach LD on Apr 22, 2007 - 11 answers

How can I find a legendary "formula" for an A-Bomb and not be put on a terrorist watch-list in the process?

How can I find a legendary "formula" for an A-Bomb and not be put on a terrorist watch-list in the process? [more inside]
posted by Becko on Apr 11, 2007 - 13 answers

how did i give myself this freckle?

is there a chemical that can permanently stain skin brown, or induce a freckle? [more inside]
posted by thinkingwoman on Apr 8, 2007 - 16 answers

How much to charge for tutoring?

What is the going rate for one-on-one tutoring in chemistry? [more inside]
posted by janell on Mar 19, 2007 - 10 answers

Why do orange chicken vapors make me cough?

This question is about chinese fast-food orange chicken (the deep-fried amorphous nuggets with a thick tangy glaze). When I take a deep smell from a hot bowl of this chicken, or hold it in my mouth and breathe around it, some sort of irritating vapor makes me cough (or stings my nose). Just one cough – enough to keep it from getting into my lungs. Once the chicken cools down (to mouth temperature, even) it doesn't happen. It reminds me of the reaction I've had sniffing acid in lab – could it be lots of volatile vinegar? I've experienced this with fast-food chicken in more than one college food court.
posted by lostburner on Mar 8, 2007 - 20 answers

How can I test mail-order medications for purity?

Is there an easy, inexpensive way to check if the meds I order from overseas by are real? For example, would the solution linked below be something a total novice could do? How could I actually learn the process? (and please, no lectures on whether ordering from overseas is good idea. That's what I'm trying to find out.) thanks.
posted by soulbarn on Mar 2, 2007 - 10 answers

A Problem of Scale: Halfway in size between an atom and the universe

"A human is halfway in size between an atom and the known universe"... This is a paraphrased quote I have come across several times. I like it. Who said it first? How true is it in the most literal sense? And, finally, what errors arrive in postulating a universe, or an atom, which can be measured AT ALL from our singular, relativistic, perspective? [more inside]
posted by 0bvious on Feb 18, 2007 - 14 answers

Ugly discharge equals ugly bubbles.

Bath bubbles change in the presence of a yeast infection. Why? [more inside]
posted by kmennie on Feb 7, 2007 - 7 answers

Is chemistry really that important?

I've been seeing a great guy. He's sweet, smart, funny, and he likes me! So what could possibly be the problem? [more inside]
posted by different on Jan 17, 2007 - 26 answers

Is burning silica gel dangerous?

Last week at a friends house we were sitting around a nice fire, when my brother found one of those silica gel packets, and (stupidly) threw it in. The room almost immediately filled with noxious fumes, and our throats hurt for a couple days afterwards. What happened when that silica burned, and was any permanent damage done?
posted by splatta on Jan 11, 2007 - 8 answers

Mead-making and measuring alcohol content

Measuring alcohol content without a hydrometer? [more inside]
posted by Blazecock Pileon on Jan 10, 2007 - 8 answers

Better soup-making

SoupFilter: Why do soups taste better after aging? [more inside]
posted by Blazecock Pileon on Nov 25, 2006 - 8 answers

Sugar sugar, ah honey honey

Chemistry and flavour: Do all sugars taste sweet? Are there substances that are sweet tasting that are not sugars/carbohydrates? [more inside]
posted by winston on Nov 19, 2006 - 12 answers

Identify this mix of chemicals

Attention chemists: I am seeking to identify a product that contains a list of ingredients that strikes me as fairly odd. [more inside]
posted by sindark on Oct 3, 2006 - 15 answers

mean and median differences?

In a least squares regression model what does it mean when the median is larger than the mean? [more inside]
posted by EvilKenji on Sep 25, 2006 - 13 answers

Online Chemistry degree

Is anyone aware of an American University that offers an online Chemistry Degree (BS or BA). Thanks [more inside]
posted by Noodles on Aug 14, 2006 - 5 answers

Looking for a super-stylized periodic table

Calling designers: I'm looking for a really stylized periodic table of the elements! [more inside]
posted by neilkod on Aug 1, 2006 - 33 answers

Can I get rid of the alcohol in a tincture?

Here's one for all the chemistry majors out there. I'm going to be making an herbal tincture using Everclear as the solvent. After the tincture has been made, is it possible to get rid of the alcohol by heating the solution gently in a double boiler without affecting the potency of the tincture? [more inside]
posted by TorontoSandy on Jul 13, 2006 - 13 answers

Pins and Needles: Why?

What is the underlying physiological cause for paresthesia (tingling of the fingers) secondary to hyperventilation? Specifically, what metabolic or neurological process causes you to feel tingling in your fingers when you hyperventilate?
posted by scrump on Jun 30, 2006 - 2 answers

Ethanol's pros and cons

How much does an x% ethanol gasoline blend product reduce mileage? Does the environmental benefit from ethanol blends outweigh the increased consumption of gasoline products? Or is the benefit negligible for the consumer? [more inside]
posted by Blazecock Pileon on Jun 19, 2006 - 12 answers

Chemical Equation for Syphilis

I found this chemical equation on the wall of a men's room in a bar last night. What is it? More importantly, why would someone write it above a urinal at a bar?
posted by nomad on Jun 10, 2006 - 15 answers

A question of zeppelins

Why is Hydrogen inflammable? And not Helium? [more inside]
posted by DieHipsterDie on May 27, 2006 - 15 answers

Why is he still going to

If a guy is not a player why would he continue to frequent a dating site a month into what seems to be a pretty good relationship for both of us? [more inside]
posted by terra on May 19, 2006 - 36 answers

Chemistry for a dummy

When I pour sugar in my coffee the total volume in my mug increases. What happen to the volume when the sugar dissolves (decreasing or stable ?) ?
posted by vincentm on May 18, 2006 - 9 answers

How do I graphically represent a chemical compound?

Calling all Organic Chemists! Please help me with my next tattoo! [more inside]
posted by anonymous on May 1, 2006 - 7 answers

melatonin in dogs?

Is melatonin present in the brains of other mammals, specifically dogs? Does it serve the same function? How unique or not unique is the brain chemistry of humans?
posted by geekhorde on Apr 21, 2006 - 7 answers

Do the berries make it boozier?

Does a vodka fruit infusion ferment? Is the resulting drink more alcoholic than the base distilled spirit? [more inside]
posted by aneel on Apr 11, 2006 - 14 answers

What happens in that oven?

Why does cookie dough taste better than cookies? [more inside]
posted by coolhappysteve on Mar 24, 2006 - 20 answers

Household gas: rises or falls?

Does household natural gas pool in low places or rise to high places? [more inside]
posted by freebird on Feb 13, 2006 - 19 answers

Chemistry for poets

ChemistryFilter: Help me understand significant figures. [more inside]
posted by discokitty on Feb 6, 2006 - 31 answers

Help me not frack up the best thing that's happened to me, ever.

RelationshipFilter: How much does chemistry matter over the long haul? Or, please don't tell me this is my last AskMe relationship question. (Very long, very self-absorbed more inside) [more inside]
posted by anonymous on Feb 4, 2006 - 37 answers

Why is phosphorus so biologically important?

To the biochemists: what's so special about phosphorus? [more inside]
posted by feathermeat on Jan 22, 2006 - 10 answers

And the award for the world's most paranoid dieter goes to...

Are there any simple tests that can be done (besides tasting) to determine if a given sample is diet coke or regular coke? [more inside]
posted by skjønn on Jan 5, 2006 - 36 answers

Can I get carbon from the air?

Theoretically, if I needed large amounts of carbon, could I extract it from the air? How could I do it?
posted by Mwongozi on Dec 6, 2005 - 18 answers

Help me think of a slogan for automation tools

My company develops chromatography software. It has recently developed several ways of automating certain processes that will help the user save time and automate things. I'm trying to think of a collective name for them. "Timekeeper Technology" is one I've just thought of. Can you think of any others?
posted by wibbler on Dec 1, 2005 - 12 answers

How could a Coke can leak its contents without any apparent holes?

How could a Coke can leak its contents without any apparent holes? [more inside]
posted by chrismear on Nov 23, 2005 - 25 answers

Do I want reagent-grade chemicals on my face?

FormularyFilter? Compounding my own salicylic acid facial peels: do I need to use pharmaceutical grade ingredients? [more inside]
posted by needs more cowbell on Nov 6, 2005 - 12 answers

That crazy feeling

Has anyone ever done a study on the neurological effects of the first week or two of a love relationship? There's got to be some sort of brain chemical released during that period... but what is it? Or, in broader terms: What's responsible for that heady, crazy, giggly feeling that both guys and girls get?
posted by SpecialK on Oct 17, 2005 - 12 answers

Squeeze the bottle to prevent carbonation loss?

Does squeezing a 2-liter Coke bottle before putting the cap on help keep the Coke from going flat as quickly, or not? [more inside]
posted by msittig on Aug 30, 2005 - 15 answers

if you say God I'm gonna be very disappointed

Where do heavy elements come from? [more inside]
posted by clockzero on Aug 16, 2005 - 13 answers

Scientific jargon in other countries

In America (and in Europe, too, I suppose), we use the Linnaean taxonomic system for living things and have certain specific terms (acetate, polymerase, cholinergic, etc.) that are used in chemistry, for example; how does such terminology work in other languages, especially those very dissimilar to English, such as Chinese?
posted by clockzero on Jul 29, 2005 - 6 answers

Bisphenol-A Substitutes

Are there affordable substitutes for Bisphenol-A that can be used to create clear, hard plastics in a variety of tints, and that are food safe? [more inside]
posted by alms on Jun 7, 2005 - 4 answers

So would this be ChemistryFilter or PhysicsFilter?

What would happen if you take a cube of ice, at a specific size, and fit it in an airthight glass box with the exact same dimensions, and then let it melt? [more inside]
posted by cheerleaders_to_your_funeral on Jun 2, 2005 - 29 answers

Does sodium hydroxide go bad?

ChemistryFilter: Can NaOH lose it's potency? Is there any easy way to test it?
posted by dejah420 on Sep 4, 2004 - 14 answers

Page: 1 2 3 4 5 6