Applied Chemistry

How can I make a homemade bomb that can be explosive as gunpoweder or dynamite ?

Hello everyone, for some experiments i have a kathode which is a 4-inches wafer with some fancy surfacetreatments. As an Anode i unsually use a platinum electrode. I use voltage instead of current densitys (i try to copy another project). The problem i have is, the anode is pretty small arround 2 mm^2 - at first this was not an issue, because my kathode was also pretty small. So, i'am sure this isn't a size ratio which is ideal, tbh i don't think this will work properly. Is there a formula or some theory, which gives me an idea, how big a platinum electrode should be (or how voltage and current density is influenced by unequal elctrodesizes)? And something else,…

Hello, is it possible to grow copper crystals without copper sulfate? Just by dissolving copper powder into water then applying voltage and current? Or any other way to grow Copper Crystals without using Copper Sulfate? Thanks!

How can alcohol be removed from an alcohol-containing drink (such as Hard-liquor, beer or wine) in a way that the drink will become alcohol-free? The drink must: Remain safe, but it’s no problem if it becomes undrinkable because of taste, smell or becomes a solid. Method should be: Using chemical reaction(s) which would be adding one or more substances to the drink. If suggesting a compound: Include the name of each substance used. How the substances were made into the compound. You must also: Include the chemical reactions which will take place once the substance(s) are added to the drink. …

Hi. What is PVC natural color ? Is there a clear, transparent rigid true PVC? Not just named 'clear PVC pipe' as found in products. Is it pigmented usually white when manufacturing pipes or is it natural white ? ----> https://www.usplastic.com/catalog/default.aspx?catid=592&parentcatid=728&clickid=leftnav

I am trying to better understand the chemistry behind how these small fuel filled hand warmers work. Typically they are filled with lighter fluid, which vaporizes through a cotton barrier and comes in contact with a platinum based catalyst that has been heated (? Ignited). You can control the heat output to some degree by varying the amount of oxygen available to the system. This would suggest to me a combustion reaction, but there is no flame, not when you heat the catalyst or as it reaches maximum temperature. You can see a very slight redness to the catalyst at night but otherwise nothing. So much of the information available out these small devices suggests that …

Would this be distillation?

Hi. Replacing water-based coolant in a ICE engine with a thin oily derivate that can perform near decently ? Like kerosene, transmission fluid, hydraulic oil, transformer, diesel, vegetable... Which could work, even increasing the radiator size, not boiling under 300F ?

Can anyone please tell me the substitute of acetic anhydride for the Acetylation, actually I am finding Hydroxyl Value for Ketonic Resin and it is a precursor to have Acetylating agent ready .

Hey folks. I have a question I hope you can help aid me with... If you mix Caesium Hydroxide, Cyanuric Acid and Charcoal and apply heat to 600 Degrees Celsius, would this be the basis/end result for Caesium Cyanide? Thank you. Lin.

Could you help me with this question, please? In an exothermic reaction: A- The activation energy depends on the energy released. B- Products energy is lower than reactants energy and that depends on tge activation energy. C- Products energy is lower than reactants energy and the activation energy has nothing to do with the difference between them.

Tumors are known to produce an extracellular environment which is acidic. How would acid/base concentrations be changed by this acidity? For example, consider citrate circulating through the body. At physiological pH, this molecule dissociates to citric acid. However, what form would citrate take if exposed to the acidic pH of cancer (~6.5)? Are there chemicals that can shape shift from being neutral at a neutral pH to being acidic (or basic) in an acidic environment?

Are there any essential oils that are known to be perfectly safe for topical (or oral) application by humans? I am looking for a topical anti-microbial to use in a hair loss regimen. Tea tree oil has been used effectively in a study I read, but I'm concerned about toxicity, so I'm looking for an alternative. I'm looking for something that could safely be applied to the scalp. Does anyone have any suggestions as to what I might look into as a possibility?

We're in the process of getting our solvent recycler to work with the vacuum distillation of ethanol. The purpose would be to be able to boil the ethanol off at a lower temperature to preserve the quality of the contaminant. The boiling point of ethanol is 79*C and under vacuum (28 inHg) it drops to around 34*C. We typically use a rule of an additional op-temp of 50 degrees Celsius above the boiling point of the solvent is enough to boil the solvent and maintain that boil. In the case of Ethanol, we would use an op-temp of 130*C. Under vacuum we can assume that we would need an op-temp of around 85*C. What we have found is that we still need to give the ethanol a…

Hello all! Let me begin by saying I am not a scientist. I’m just smart enough to know when I need help from those smarter than me. I’m attempting to extend the (refrigerated) life of my American buttercream frosting from two weeks to about 3 months, preferably using “natural” preservatives. American buttercream frostings typically have about 1.5 c (unsalted) butter, 4 c confectioner’s sugar, a tbsp of heavy cream/milk., flavorings, and seasoning. Each different recipe would need tinkering and I’m not sure where to begin. I’m willing to research but keep in mind I barely made it out of college chemistry with a “C” so if you can explain things to me like I’m your dumbest gr…

I am reading an article for my thesis in paintings conservation and I've come across some calculations that I can't seem to figure out. A type of absorbing tissue called Evolon is supposed to be kept overnight in a sealed container "loaded with ethanol". Strips of Evolon measuring 2 x 5 cm2 are placed in two different containers, one with 34% ethanol (87.4 mg Evolon / 102.7 mg ethanol) and one with 51% ethanol (92.3 mg Evolon / 149.1 mg ethanol). The numbers in the parentheses are given by the authors. I don't see how they relate to the percentage values. Can anyone explain to me how I can calculate the right amount of ethanol to a given amount of Evolon tissue?

Hi. Is this for all cells currently on market or only for a newly developed chemistry ? Until now, the heat while recharging was counterproductive for the cell. And risky. ----> https://www.sciencedirect.com/science/article/abs/pii/S2542435119304817

how a match stick can auto egnite only placing it on 2-3 inches of distance with chemical. I have a reference video. can anybody tell what chemical is being applied on paper in this video ?

Hi, Is Sodium Thiosulphate Pentahydrate suitable for neutralising Chromic Acid?

My name is Nathan Pedde. I am a, currently, unpublished author. I am currently working on a post-apocalyptic book about the failure of modern technology. More specifically, the failure of electricity. As such, I need help with a couple small details in my book. I have tried libraries and all sorts of web pages. None of which have made me successful in my search for an answer to a question of mine. My first book is about the disaster itself. It is almost done. I am currently working on the first draft of book two. The second book takes place many years after the initial disaster. Electricity still doesn't work properly and civilization has turned into a multitude of s…

Hello guys. I really try to understand the following problem, can you please help. If from any balloon (has some radius) is getaway some amount of gas, what will happen to its radius? T and P is const. And under ideal gas conditions. I will be glad if there is someone who can explain to me. thanks beforehand.

Seems it is not simple to melt several kinds of refuse plastics to do something useful with it. My point is as to transfer the recyclability from the expert industrials more towards the general public that collects the material. If the public collecting the trash could produce something -like lumber, bricks- by melting/molding themselves instead of selling the material to distant experts doing such, a greater amount of plastics would find immediate uses as would be much sought-after, with an increased incentive to recycle and reuse. So what additive or process could be used to facilitate raw melting/thermoforming ? Chemists came up with great plastic material…

Can someone tell the name of this? I failed the exam because I didn't know the name..

If I inject 1 g of a gas in a closed volume, why should I expect different ppm(v) at different temperatures? Shall it be the same ppm(v) regardless of the temperature since I am injecting the same amount of gas in the same closed volume? I think it will be different from the equation of state but I do not understand why. Please help. Any references? Thank you,

I have a decorative piece of copper with a rough surface which, due to it's fabrication process, has some embedded aluminum particles in the copper surface. I cannot remove the aluminum from the copper surface by grinding or polishing because it would damage the decorative nature of the piece. After giving it some thought I remembered that an aqueous solution of copper sulfate and salt (non-iodized) is a very effective way to etch aluminum. My theory is that if I submerge this piece of copper which contains embedded aluminum particles into an aqueous solution of copper sulfate and salt that the decorative copper surface will be unaffected, but the alumin…