Chemistry

Tough question here. I believe an ancient source claims that under ideal conditions, mist and otherwise total darkness, that rainbows can be seen refracted from burning willow tree oil. The best I can determine this oil would provide a full stectum, but I have doubt it would be sufficiently bright to see a rainbow. The flame would have been about 20' from the mist probably. Am I wrong? Does anyone have any experience with this or know the equations? There is some chance it was a different type of oil but the only identifiable alternatives are olive oil or castor oil. The lamp had about a 2" diameter wick and probably small amounts of water with fuel flow.

I keep hearing that windows filter Sun UV rays? some say its 99% others say its 50%, I know windows filter UV-B, but not all of UV-A. Lets say are controlled factor is a sunny morning (fall-winter season in Canada) morning when UV's are the weakest, and fall-winter when there even weaker. Would UV penetrate through a window? If so lets say I filter it by covering the window with construction paper (material used for shipping envelopes)? How strong would the UV Rays be if even existent? Would any of the following below be effected? reason why I want too know -Having a bed for a babe next to a window in the early morning? -People with sensitive skin - fear of Indoor i…

I've worked out a rate equation: rate=k'[A]a the nice and easy bit. Now I have to take the logs of both sides of the equation. The thing I'm confused about is that I have no values, it just wants me to show the equation with the logs of both sides taken, so would that literally be shown just as: ln rate= ln k'[A]a ? I'm not sure how to do that or if the answer would be as basic as writing log next to both sides?

Hello All! Hopefully I will get some good insight from all you fantastic chemists out there! Here is my situation: I am a Biochemistry student (hardly chemistry, I know), and although I have take 2 general chem. courses and 2 O. chem courses I still know very little about chemistry. Ah the wonders of science. Anyways, I am part of a mentoring program for at-risk youth and would love to do the "elephant toothpaste" KI, H2O2 catalyzed decomposition reaction. But I've heard 3% H2O2 is no good, and 17.5% "food grade" is too expensive for my college budget... Is it possible to concentrate the 3% to maybe 15% safely? Keep in mind I only have a stove and some glassware, an…

1. Here is a mole conversion question I am having a hard time. Medical experts generally believe a level of 27micrograms Pb(lead) per deciliter of blood poses a significant health risk (1dl = .1 L) Express this level in the unit mol Pb/L blood. Express your answer using two significant figures. and this one 2. During a severe episode of air pollution, the concentration of lead in the air was observed to be 3.01 micrograms Pb/m^3 . How many Pb(lead) atoms would be present in a 0.500 -- L sample of this air (the approximate lung capacity of a human adult)? These are my questions i am more looking forward to a great explanation rather than th…

I have read that Potassium Nitrate (KNO3) in a motlen state of about 450 Celcius is used in the ion exchange of aluminosilicate glass (that is glass wher some alumina, Al²O³, replaces silica) to make Gorilla Glass (i.e., chemically tempered glass). I had a question regarding the toxicity of the fumes relased by the KNO3 during this process. My question is three fold (1) are the fumes released by Potassim Nitrate alone in a molten state toxic? (2) Somewhere else I had come accross that the only air born by product KNO3 in a molten state is oxygen, is this true? (3) Does the ion exchange of Potassium Nitrate with aluminosilicate glass, occuring at 450 Celcius, have any oth…

I am confused with IUPAC naming with more functional group -CHO, -COOH. What is the IUPAC naming of the following compound? CH3-CH2-CH(CHO)-CH2-COOH . I think it's 3-alpentanoic acid. Please help me to choose the right one.

Minor chemical elements in human body and its percentage. Lithium (Li)-0.0000031% Beryllium (Be) -0.000000005 % Boron (B) -0.000069 % Fluorine (F) 0.0037% Sodium (Na) -0.15 % Magnesium (Mg) -0.05% Aluminum (Al) - 0.000087% Silicon (Si) - 0.002% Sulfur (S) - 0.25% Chlorine (Cl) - 0.15% Potassium (K) - 0.35% Titanium (Ti) - 0.000013% Iron (Fe) - 0.006% Cobalt (Co) - 0.0000021%

Hey guys, I'm having some trouble with making some home made hand warmers. The basic idea is that you put iron filings, salt, sawdust, activated charcoal, maybe vermiculite, and water in a bag. The water rusts the iron iron and creates and exothermic reaction, which creates heat. The salt accelerates the reaction. The charcoal distributes the heat and maybe accelerates, too. The sawdust just sort of absorbs the heat to make it last longer and gives it some substance. The vermiculite also distributes heat. But I'm not getting any heat. I've tried several "recipes" and have messed around with the ratios like a half a dozen times, but I'm not having any luck…

Please Share Few Benefits of taking Inositol and Where It Usage , Side effects , Thanks

Wich is the most corrosive acid/alkali

How can I make pure potassium/sodium metal

I need to extract vitamin C from fruits/veggies, is there an easy way to do it? If so, can I have a link to a method or something to help me do it.

If you guys could let me know if I'm doing this right, and maybe continue to help me, I would greatly appreciate it. We had a sub, so I spent the whole class on the first question. It's been since Friday since I worked on it so my brain is a little... Fe2 O3 - y, if you know what I mean. Maybe help me with the steps so you don't feel like your doing my homework. Let me know if the pictures come out blurry.

hi does anyone here know the standard dose of epinephrine and aspirin used for in vitro studies. i've seen different values but i dont know which to follow. I dont know how other studies come up with their concentrations.

Two Questions 1. Is throwing sodium metal in water dangerous 2. a if no where can I get some b if yes where can I get some

I'm unsure as to how many people actually watch his Youtube videos on his channel "NurdRage", but I have been a strong follower of his videos for the past few years. NurdRage will be unable to use his laboratory in the coming months due to accepting another employment offer with another company, and he will not be able to make videos at the new laborer. Luckily he has a donation fundraiser to build his own lab, but until then he will be doing viewer experiments. He will accept requests to conduct experiments that most normal people do not have the permits/resources for. I was wondering if anyone on the science forums would happen to have any interesting ideas for him.…

I am doing this research on bleaching of wood pulp using enzymes. This is a kind of a relatively more eco-friendly way of treating wood pulp to increase its brightness by using lesser chlorine chemicals. But i am doing this in a ultrasonicator since using a reactor may result in destruction of cell walls of enzyme. I dont know if anyone has tried doing so and i need so much help in carrying out the research. anyone please ?

Please see the attached file of the graph. I really need to find out the Km and Vmax. Any help will be greatly appreciated

There is detergents for clothes washing, general cleaning, dish washing, hand washing, 'shampoos', body wash, car wash, and whatever the industry can come up with to sell more. How much of it is marketing, what forbids to use dish washer products for clothes washing, or shampoo for washing hands - between extremes; as obviously one ihas to be better 'tuned' to one application than another. In the fifties, shampoo barely existed, nor dishwashing machine fluids, and less the 'bodywash' they came up with. Do their surfactants differ that much ? Is there an optimal proportion of water to say -clothes detergent- that works best, or using more will clean more ? …

I added a stainless steel spoon to approx 1.5 L of HCl acid, the acid turned dark green, I added Al foil it still stayed green but became greener, I also got what looked like carbon is that possible, was it green from Fe?

Some of these chemicals found in shampoos, soaps, pharmaceuticals, detergents, preservatives, etc are harmful, poisonous, or corrosive to the human body. What makes these substances caustic or poisonous, compared to substances found directly in nature? Natural chemicals are found in water, rocks and stones, plants, and animals. As far as I am concerned, nothing in nature is caustic, as I have never had water or a certain stone destroy my hands if it came in direct contact with my skin.

I have dissolved gold plated metal computer connector pins in conc nitric acid ( i think I should have used conc HCl ) and have a gelatenous blue mass in the reaction beaker. I assume the pins had iron in them and this product is iron nitrate any ideas as how to get this to dissolve so I can filter out the undissolved gold plating which should be left undissolved. Thanks.

how can I get my cakes not stick? I have tryed grease and flour and they still wont come out of the pan. I have tried parchment papper and they change it changes the shape of the cake. how do I get the cake out and be round and perfect? (things sticking or not is chemistry so it can be argued that this is the place for it and I think it might get more knowlageable awnsers here but I could see someone saying that this doen't belong here as it isn't like really like real chemistry...I gues"

Being a biochemistry student I have done NMR workshop using Lysozyme; now I need to describe the spectrum. I wasn't taught how to do it on the lectures and have no idea how describe the spectrum. It would be really helpful if someone could give me some guidance on what to include in this description. Thank you!