Top new questions this week:
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Currently NMR spectra are generated by Fourier transformation of free induction decay curves from time domain to frequency domain. In the late 60 s-80s some researchers proposed reconstruction of NMR …
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Can water be converted into hydrogen and oxygen using sunlight and a specific catalyst? I can imagine a electrolysis reaction using a catalyst that uses light to release electrons. The goal is to find …
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Surface plasmonic resonance biosensor devices are used to measure analyte concentration, kinetics, affinity, and specificity without any need for labels. This technique involves the bonding of the …
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I have some ideas on how this transformation may occur. We’re currently studying Ch. 3 (Polar Rxn’s under Acidic Conditions) from Grossman’s book. I’ve found some data online that shows we can perform …
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Pyridine and pyrrole are two of the first aromatic heterocycles encountered in organic chemistry. Recently, I was surprised to find that their solubility properties are vastly different. The website …
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First, chlorophyll extraction was done with ethanol. I used my phone’s flash light to see the fluorescence which was a little pinkish red. Then, I added an ether solvent to the extracted chlorophylls(…
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We are currently using a nichrome (80/20) wire based heater to surround a sample chamber that we wish to heat by radiation. Maximum sample temperature is 400degC in an atmosphere of air that may be …
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Greatest hits from previous weeks:
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Wikipedia states that waxes can be dissolved by non-polar organic solvents. I failed to dissolve candle wax in both acetone and ethanol, which are the only organic solvents I have at home. I have …
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From school, I remember a very important rule: first you need to pour the water and then the acid (when you need to mix them) not vice-versa. This is because otherwise the aсid becomes very hot and …
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Part A) Given a barometric pressure of $\pu{764.0 mmHg}$, calculate the pressure of gas sample (a) as indicated by the manometer. Part B) Given a barometric pressure of $\pu{764.0 mmHg}$, calculate …
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Is the melting and boiling point of ionic bond usually higher than covalent bond? I know that compounds with ionic bonds are usually solid at room temperature, so I want other answers than this. (…
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The boiling point of water is $\pu{100^\circ C}$. However, we find that even at room temperature, water can evaporate into gas. Therefore, water vapor can exist at temperatures of, say, $\pu{50^\circ …
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A mixture is made by combining 110 mL of 0.15 M $\ce{HCl}$ and 215 mL of 0.055 M $\ce{HI}$. What is the pH of the solution? $$\ce{HCl -> H+ + Cl-}$$ $$\ce{HI -> H+ + I-}$$ According to what I …
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I’ve always been puzzled by this because my teachers happen to use only the KLMN method, but what is the difference between the KLMN and SPDF methods of finding electronic configuration?
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Can you answer these questions?
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For counting the electrons of the complex (RO)3W≡CMe, the book considers three RO- groups that donate a total of 10 electrons and it regards ≡CMe as [carbyne]- group in the ionic model and has a total …
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Background: I’m a student and have recently done some XRD on some iron ore mine tailings which came from an Australian mine tailings storage dam. The redness in colour and industry source led me to …
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I tried to get rid of some mild rust on a couple of steel elements (cases, screws and whatnot). My intention was to get rid of physical rust by manually scraping it off, perhaps sandblasting and then, …
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