Chemistry

Hello Friends How are you doing? I manufacture Playing Cards On both Paper and Plastic I need help as I am receiving a lot of complaints regarding durability in my Plastic Playing cards We print on Rigid PVC one side is matt[ smooth side] and other side is grain [ rough side] The complaints i receive is that the ink wears off after 1 day usage to protect the ink we use Water based Coating we do not know much about the science involved but over here The issue i feel is adhesion of the inks with the substrate, If someone here can help me out with information on how to improve my durability It will be of a Huge help Thanks Raahul Singh .

Hey guys, I need some nitric acid to refine gold and probably some other experiments but I can not find a good source to get it. So if anybody knows one it would be much appreciated if you let me know.

i need to know in which temperatures does humidity forms ice crystals around copper pipe i need to know the exact mathematics for example: if the humidity is X and the temperatures around the pipe is Y, and i decrease the copper pipe temperatures when will ice crystals form around the pipe? X = any possible humidity on earth Y = ambient temperature

Hello, I was wondering if it was plausible to build a reverse osmosis water filter that would fit into a water bottle..

Hello, I am 11 years old but love science. I was wondering if anyone has a recommendation on a course or book I can read that teaches chemistry. I already have the basics of the periodic table down but that is about it. In the end, I would like to learn about synthesis.

I have two chromatography systems, one is affinity and another is size exclusion. I have sample A, 0.32 ml dissolved in 5 ml of the solvent (0.32 ml sample A + 4.68 ml binding buffer). Then I inject 1 ml of that diluted sample A to the affinity column. When I wash the column with the elution buffer, the eluate (let's name it eluate A) comes out as a small band (0.5 ml). I also collect 5 ml of unbound portion that flows through the column. Then these samples I inject to the size exclusion column. So, what I inject to the SEC column include: 1. Eluate A 0.5 ml 2. Unbound portion 1 ml 3. Sample A 0.32 ml Then I measure the concentration of the sample using colorim…

In a chemistry question, it asks to explain why vats in fermentation are fitted with copper pipes, thought it would be for ventilation to let CO2 escape, due to buildup of pressure or to allow cooling as it is exothermic in nature. Which, if any, would be a more correct answer

I'm using Gamry Potentiometer for taking CV measurements for finding the appropriate voltage values for oxidation/reduction peaks and Echem Analyst for analyzing. CV measurements has performed on liquid electrolyte in order to find if working electrode accept Li ions. My question is about interpreting the results. How can I interpret if potential difference equal or below 1V has no oxidation or reduction peak (or has only one of them) while potential sweep between -2V to 2V bring good results but if I change it to 1 to -3 no reduction peak again. Moreover, going to negative values has a bad consequences such broke the working electrode. What does it mean going to negati…

A dish-washing tablet used to clean dishes and cups leaves some kind of residue. I left some burbon whiskey in a cup overnight and there is now a powdery substance in the liquid. Would this be due to the corrosive properties of the alcohol or residue normally?

I am analyzing a sample using size exclusion chromatography as the separation technique, and UV-VIS is used as the detector. I have some troubles regarding the calculation of the final fractions that I get from the separation. Will these two experiments give the same absorbance results? Experiment 1: Inject 0.5 ml of sample A into the column Experiment 2: Inject a mixture (1 ml) of 0.5 ml of sample A + 0.5 ml of solvent that does not have absorbance at the wavelength I am using. I am aware that the absorbance is of course related to the concentration. However, in this case, both experiments have the same amount of sample A running through the column. Therefore, …

What is the highest burning (temperature) liquid fuel/liquid fuel combination?

I'm a high school sophomore and my Chemistry teacher has assigned me the following project: I have to create a fire suppression system using baking soda (NaHCO3) and hydrochloric acid (HCL). I have to simulate a flammable facility, using a 15cm by 30cm by 10cm 3D cardboard structure. In this structure, I will have to have 8 "rooms", each where a candle will be placed and lit. There is no roof or floor for the cardboard cutout. I have to develop an automatic fire suppression system that will be triggered by one or more candle flames. The trigger mechanism will cause the 1M HCl solution and the NaHCO3 to mix, ultimately producing CO2. I will also have to build a deliver…

can you burn oxy acetylene in a bunsen burner

If you add pressurized air through the air hole on a Bunsen burner will it make it burn hotter?

Hello! I analise metal chemical shifts, and there is some trend: I > CN > Br > NH3 > NO2 > Cl > H2O, so, the metal signal shielding increase in order showed below... I noticed, the less electronegative and bigger halogen ion as ligand, the chemical shift of metal, like palladium, is more shielded. It is probably caused by backdonation of electrons from ligand towards metal. What about the other ligands? For example, NH3 is "less electronegative" ligand than H2O, so lone pair on nitrogen may donate electrons? bond metal-OH2 is more ionic probably, and electrons are shiftes slightly more to oxygen than metal... What about CN, NO2? What can be the effect…

ok well first of the mods ok'ed this, all laws and shipping regulations will be followed(i can give the exact law that allows this if needed) USA only item has to be shipped ground, under "ORM-D consumer commodity" its U238 here is a picture of one piece depending on size i can ship it in a sealed glass ampule or a glass screw top bottle i bout some for my element collection but have more then i need and would like to get rid of some and i figured others might like a small amout of pure uranium metal for their collection. the price is around $20/g plus shipping which is $5.95 (im open to negotiating) and different sizes are available i am also …

I'm reading some of the news about new elements being added to the table and it got me wondering how are new elements discovered typically? Also, how are synthetic elements created? I assume its done by monkeying with the number of protons, neutrons or electrons in an atom, but how is that practically done?

I have a fundamental understanding of chemistry (electronegativity, covalent and ionic bonds, polarisation, acid / base, functional groups etc) but i dont have much hands on experience. I would like to know if its possible given you had infinite amounts of each chemical in the periodic table to synthesise any other chemical following a set of reactions. Furthermore if it is possible can we permute all the possible isomers, reactions and ultimately the chemical results to such a degree that we can predict its physical properties? One final thing, if the first proposition is true, would there not be an infinite amount of resulting chemicals? for example just ad…

Guys..I need some guidelines on this... If we add V2O5, H2O and EDTA...will EDTA reduce V5+ to V4+ If so what should be the optimal ratio of these three compounds...how to decide?

The Natural History Museum in London has an exhibit on quartz crystals and their use in silicon growth. Does anybody here know more about the process??

When I was doing some work experience, back in the 90's, I was asked to work out the zeta potentials of particles in an industrial slurry.... I'm sure it was just an exercise to keep me busy and out of the way as I could see no practical use of knowing these potentials in the situation they had. This meant that I had to look through a microscope with a graticule, apply a charge across the sample and time how long it took for a particle to cover a certain distance - from an equation involving particle speed and charge I could work out the zeta potentials of the particles... a few dozen runs (along with the odd crafty snooze) and an average was taken. I am currentl…

Disease, high blood pressure is "unclear the reason for the disease" But, before the period was the discovery of "glymphatic system" is a functional waste clearance pathway for the vertebrate central nervous system (CNS) by exchange of solutes between the CSF and the ISF is driven by arterial pulsation , and some studies on this system " the authors reported that when cerebral arterial pulsation was either increased or decreased, the rate of paravacular CSF flux in turn increased or decreased, respectively" [1] Now, regarding "high blood pressure" is it possible that the reason is: Inefficient "glymphatic system" , then rise "blood pressure" for make up for it. fi…

Hi Guys, i need the Supplier and structural formula from the GSK RIPK1 inhibitor and an serious seller for 100 grams, maybe an seller in china? Does anyone have an idea or contacts? BR Mani PS: The suspected structure attached!

I was doing some research on the flame temperature if various fuels and a lot of them had temperatures for in air and also for in an oxygen environment. is it "better" to burn things using liquid oxygen or is it the same as long as you have enough oxygen? a 2/3rds h2 and 1/3rd o2 flame will burn at about 2700 Fahrenheit which isn't hot enough to turn steel into a liquid. would it be possible(or feasible) to have a liquid torch and would it burn hotter than the 2700 degrees for a perfect mixture of the gasses *edit* my spell check plugin is a bit broken and it replaced temperature with tempature if someone could fix that for me that would be awesome!

I recently purchased a one ounce palladium round shape as a coin, knowing that palladium absorbs hydrogen gas and after absorption Palladium do some different action in a glass of cold water. I decided to see if this was true. So I then went and set up electrolysis apparatus where the hydrogen gas would be directed through some tubing right onto the palladium one ounce coin I have. I did this little 'electrolysis' for quite a while to ensure that a good deal of hydrogen gas would get absorbed onto the palladium. After about five hours of continuous electrolysis, I went and keep it in a glass of cold water and wait for result, yes it is very true that after thirty mi…