What's the best way to get tetracycline in solution? I've been using 50% EtOH soln, with no luck.?
Q. I've been using 50% etoh to dissolve 25mg into 10mLs but it just won't dissolve. I know that tetracycline is a pain in the butt to get into solution. Any tips or tricks would be helpful thanks.
Asked by chazwozel - Fri Aug 18 12:32:27 2006 - - 4 Answers - 1 Comments

A. I don't know what moron told you to use 50% EtOH, but that will never get 25mg into 10 ml! Use 100% (or close to like 95%) EtOH, then you will be able to get 50 mg into 10 ml!--then use half as much of this stock, get it! Also store this solution in a dark cold place the best being a -20 freezer.
Answered by meton0 - Fri Aug 18 17:17:18 2006

Write out how to prepare 285 ml of 75% EtOH from stock denatured EtOH?
Q. Dilutions and Describe how you would make a 500 ml of 35.0% EtOH from denatured EtOH in the voltile storage.
Asked by Mittens - Sun Jan 11 18:50:21 2009 - - 1 Answers - 0 Comments

A. You use the formula M1V1 = M2V2 where M stands for the percentage and V stands for the volume. If you want 285 mL of 75%, that means M2 = 0.75 and V2 = 285 mL. M1 must be 1, since you're making it from a pure EtOH solution (200 proof) presumably, so you solve for V1. V1 = .75 * 285 mL = 213.75 mL (which you can probably round to 214 mL) That means that you add 214 mL pure EtOH to 71 mL distilled or deionized water to make the desired solution. Same process for the second: V1 = 0.35 * 500 mL = 175 mL EtOH, add 175 mL EtOH to 325 mL pure H2O.
Answered by Chemis-T - Mon Jan 12 15:09:22 2009

Chem Help!!!If the average person has 6 L of blood, how many moles of EtOH would their blood contain if they m?
Q. Could someone please help me with this question? If the average person has 6 L of blood, how many moles of EtOH would their blood contain if they met the legal definition of intoxication?
Asked by Eliz n - Sat Feb 7 12:58:44 2009 - - 2 Answers - 0 Comments

A. In the UK the legal maximum limit for alcohol in the blood is 80 mg per 100 mL. In 6 litres of blood there will be 80 x (6000 / 100) mg of alcohol = 4800 mg = 4.8 g The formula for ethanol is C2H5OH. The molecular mass is (2 x 12) + (6 x 1) + (1 x 16) = 46 g/mol The number of moles of ethanol is 4.8 / 46 = 0.104 moles.
Answered by Steve S - Sat Feb 7 13:10:43 2009

What intermolecular forces exist between ethanol (EtOH) and Water?
Q. What intermolecular forces exist between ethanol (EtOH) and Water?
Asked by Young Lovable Huggable Guy - Mon Feb 15 00:13:24 2010 - - 2 Answers - 0 Comments

A. the forces between a and n and the forces between n and d exist between ethanol and water
Answered by anthony a - Mon Feb 15 00:34:24 2010

Panda Express cooks with a 50% etoh wine syrup will the etoh be comepletely cooked out?
Q. I have to to an Etg urine test. will it be positive. how quickly does the etoh cook out.
Asked by terwilligernancy - Fri Jun 8 16:51:11 2007 - - 3 Answers - 0 Comments

A. Most alcohol when put in food is cooked out and evaporated due to high temperatures. i think you should be fine.
Answered by SugaMama - Fri Jun 8 16:55:57 2007

structure of the dominant Organic product of the reaction of 1-Bromocyclopentane with KOC2H 5 in Ethanol (EtOH
Q. what is its name?
Asked by Elvis P - Mon Sep 24 22:04:43 2007 - - 1 Answers - 0 Comments

A. cyclopentene: the bond line structure would be that of cyclopentane with a double bond placed anywhere on the structure.
Answered by Liz - Wed Sep 26 11:33:22 2007

Pand express cooks with etoh will the etoh burn out they cook at a high temp. Im getting the Etg urine test?
Q. Pand express cooks with etoh will the etoh burn out they cook at a high temp. Im getting the Etg urine test?
Asked by terwilligernancy - Fri Jun 8 12:57:22 2007 - - 1 Answers - 0 Comments

A. you will be fine
Answered by dnt4get2luvme - Fri Jun 8 13:03:57 2007

What does ETOH on board mean?
Q. it has to do with 911 call for an ambulance
Asked by TnD05/03/06 - Sun Feb 11 13:44:49 2007 - - 2 Answers - 0 Comments

A. ETOH -> Ethyl Alcohol It means a person is drunk or intoxicated.
Answered by Vegan - Sun Feb 11 13:49:37 2007

If your ETOH is 97%, what is your blood alcohol?
Q. If your ETOH is 97%, what is your blood alcohol?
Asked by rainingcatsanddogs51 - Wed Dec 19 12:58:50 2007 - - 1 Answers - 0 Comments

In medical terms, what is ETOH?
Q. On a piece of paper it says : "Non-smoker, occasional ETOH"... ?
Asked by spencer_tracy - Wed Jul 15 21:31:53 2009 - - 3 Answers - 0 Comments

A. It means ethyl alcohol---or alcohol for short. I believe it is being used as a quick way to say someone occasionally drinks alcoholic drinks.
Answered by janet - Wed Jul 15 21:37:52 2009

how fast does etoh wine cook out of food when cooked for 2 minutes and a high temp?
Q. how fast does etoh wine cook out of food when cooked for 2 minutes and a high temp?
Asked by terwilligernancy - Sat Jun 9 13:48:00 2007 - - 5 Answers - 0 Comments

A. i think your asking how fast the wine cooks out of food. do you mean the Alcohol or the wine taste? will just for fun the ethyl alcohol burns off fast, meaning you cant get anything other then taste
Answered by techie 2 - Sat Jun 9 15:52:30 2007

How would you draw (description) of the major organic product of the sequence of the following reactions?
Q. DRAW a bond-line structure of the major organic product of the sequence of reactions of 1-Iodo-2- (p-ethylphenyl) ethane with sodium bromide in aqueous ethanol; followed by treatment of the dominant organic product with hot NaOEt in EtOH. Yes I know you can't draw on Yahoo. A description or link to where I can find the answer would be great. Thank you.
Asked by orglush - Tue Nov 27 20:22:05 2007 - - 1 Answers - 0 Comments

A. Who thought up this reaction? a) convert iodide to bromide (for what purpose, pray tell?) b) elimination to give (p-ethylphenyl)ethene (a styrene analog)
Answered by Dr OChem - Tue Nov 27 21:10:28 2007

How is it possible that a 214 lbs man drink for 5 hours straight and only be twice the legal limit?
Q. How is it possible that a 214 lbs diabetic man can drink 5 glasses of wine, 4 shots of blackberry brandy, 4 shots of hot damn 3 Voka and diet cokes in 4 to 5 hours and only be at 147 EtOH level? Could it be because he was taking Neltrexone hcl?
Asked by Dave b - Sat Jan 23 01:13:16 2010 - - 1 Answers - 0 Comments

A. your body processes 1 to 3 drinks an hours , some guys can have 15 drinks in five hours and still be legally sober , the safe guideline is if you have had 2 drinks in the last hour do not risk driving. some people could be ok some people would be dead , so it isn't worth the rish, and noone is going to say ' go ahead and drink and drive it is fine" that is just not PC
Answered by Tiny Dan - Sat Jan 23 01:20:53 2010

what is my percent yield and how is it calculated?
Q. In the aldol condensation of benzil and diphenylacetone to form tetraphenylcyclopentadien one, 1.05g of benzil and 1.05g of diphenylacetone were used along with EtOH and KOH. 1.82g of tetraphenylcyclopentadien one crystals were formed. what is the percent yield and how do i calculate it? I know it might be over 100 if they crystals were not properly dried.
Asked by liz_mb10 - Mon Apr 7 23:18:19 2008 - - 1 Answers - 0 Comments

A. Rather than take all of the fun from you, I'll just let you know how you would calculate it. Write out your reaction so you know the stoichiometry, and figure out what your limiting reagent is like you did in gen chem. From this, calculate in grams how much product you would expect if ALL of your limiting reagent reacts to form products. Then, percent yield = experimental yield in grams / calculated yield from above * 100%
Answered by NewFather - Mon Apr 7 23:23:46 2008

Converting 190% EtOH to 100%?
Q. I only have 190% EtOH and need 100%. I've done the math a few times but am still a little unsure. Someone help me out!
Asked by pealee8 - Tue Jun 24 10:52:16 2008 - - 4 Answers - 0 Comments

A. When fractionally distilling ethanol and water, the mixture azeotropes at 95% alcohol. An azeotrope is a mixture which cannot be further purified by distillation because the concentration in the vapor phase = concentration in liquid phase... The term " proof" is a beverage term for % alcohol in water and is 2 x the % concentration. 190 proof = 95% Ethanol in water. You can't make 190 proof into 100% alcohol by dilution. To make it 100% ETOH from 95% alcohol, involves drying it carefully through molecular sieves. A very expensive process. do you mean to go from 190 proof to 100 proof? if so, proof is % by volume... ml of alcohol / ml solution... since density is not conserved, you need to find densities of the two solutions...
Answered by m w - Tue Jun 24 11:41:35 2008

Reasons for using a mixture of water and ethanol as crystallizing solvent rather than pure ethanol or pure H2O?
Q. Can you suggest some possible reasons for using a mixture of water and ethanol (1:1 mixture H2O/EtOH) as crystallizing solvent rather than using either pure ethanol or pure water? Can anyone help me with this?
Asked by PleaseHelp! - Wed Jan 14 05:46:35 2009 - - 1 Answers - 0 Comments

A. The compound you are crystallising is less soluble in etoh/h20 than in pure water. when you cool it down therefore more of it crystallises out increasing the yield
Answered by C B - Wed Jan 14 06:36:27 2009

What is the major organic product of the sequence of reactions of:?
Q. 1-Iodo-2-(p-ethylphenyl)e thane with sodium bromide in aqueous ethanol; followed by treatment of the dominant organic product with hot NaOEt in EtOH.
Asked by ayo_state - Tue Nov 27 20:48:19 2007 - - 1 Answers - 0 Comments

A. p-ethylstyrene
Answered by Dr OChem - Tue Nov 27 21:35:28 2007

What does "Toxicology 1.95 EToH" mean?
Q. I wound up in the ER and then jail one night after a large amount of alcohol consumption. I've recently received my medical charts and I've tried to find what my BAC was. The only thing I can find that looks related was a box titled Toxicology 1.95 with EToH scribbled next to it. That can't be my BAC, I've not found any records with a level that high. Can someone help? I know that I polished off at least a fifth of vodka within about two hours, and I'm a 5'-4" female that weighs about 130lbs.
Asked by cutie*pie - Wed Oct 1 11:09:17 2008 - - 1 Answers - 0 Comments

A. 1.95 EToH (Ethyl Alcohol) is the alcohol level in your blood. Blood alcohol is much higher then breath alcohol. You will not find your BAC on your hospital records. The hospital doesn't do blood alcohol concentrations test. The police do that.
Answered by Str8 Shooter - Wed Oct 1 14:41:45 2008

if one has had a 3 drinks,gets into a car accident,but their liver is lacerated,can it affect blood etoh level
Q. if one has had a 3 drinks,gets into a car accident,but their liver is lacerated,can it affect blood etoh level
Asked by Rain - Tue Oct 2 18:38:36 2007 - - 3 Answers - 0 Comments

A. As an EMT, I can tell you that if your liver is lacerated, the alcohol level in your blood is irrelevant. Major blood loss from the lacerated liver will result in death if the ER cannot get it stopped fast enough. If the liver is only damaged, then your body's ability to rid itself of excess alcohol is impaired => the ETOH level will take much longer to decline.
Answered by James D - Tue Oct 2 18:53:49 2007

Does anyone know if a hemolyzed blood sample will effect the alcohol level in someone's blood?
Q. I'm wondering if when someone gets their blood alcohol level tested, if hemolysis will falsely elevate or lower the actual blood ETOH level.
Asked by jpasto81 - Thu Aug 21 15:39:05 2008 - - 2 Answers - 1 Comments

A. In short NO. There is no active transport of alcohol into the red cell and metabolism within the cell of the alcohol would only minimally affect the level. Where error can occur is when the colorimetric assay is performed and if the hemoglobin within the cells could fool the reader into thinking that there is more of the dye produced in the reaction with the alcohol. But current ethanol testing is not affected by hemoglobin or whole red cells. Old Doc
Answered by a simple man - Thu Aug 21 16:54:18 2008