Top new questions this week:
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Commonly known buckminster fullerene has molecular formula C60 if we calculate it's degree of unsaturation by formulae, it comes out to be 61 and it is also known that this fullerene has 12 pentagon ...
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Hydrogen peroxide is supposed to dissociate as
$$\ce{H2O2 <=> H+ + HO2-}$$
But I can't find a source for the conductivity, $\lambda$, of the hydroperoxide anion $(\ce{OOH-}$ or $\ce{HO2-})$ on ...
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i have a question regarding the usage of recursive SMARTS. I'm using python and rdkit for my coding. My goal is to get the substructure of carboxylic acids which are bonded by an ethyl-group to an ...
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I understand the basics that chromatography is a fairly slow and expensive process compared to direct synthesis. When a synthesis route is not feasible, the economics become favorable. Not being in ...
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Looking at the Octahedral complex, the chromium is a $d^6$ complex and, if the Chromium bond gets oxidised, it will have lesser electrons to donate to phosphine's $\sigma^{*}$ orbital.
This effect is ...
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Sometimes universal indicator solution, or whatever acid-base indicators, is added into an electrolytic cell to indicate the change in pH at electrodes over time.
I wonder, if universal indicator ...
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In $\ce{S_N2}$ reaction using thiourea and alkyl halide, it is the sulfur atom rather than nitrogen atom that attacks alkyl halide. But nitrogen also has lone pair, so there is a chance that it acts ...
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Greatest hits from previous weeks:
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In mineralogy class, I was taught that metallic and ionic bonds are weaker than covalent bonds and that's why quartz and diamond have such a high hardness value. However, in organic chemistry class, I ...
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I'm learning how to apply the VSEPR theory to Lewis structures and in my homework, I'm being asked to provide the hybridization of the central atom in each Lewis structure I've drawn.
I've drawn out ...
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I had a recent question on a test that asked what the products would be if sodium hydrogen carbonate were dissolved in water. I had a few candidate answers
$\displaystyle\ce{NaHCO3 -> Na+ + HCO3-}$...
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Let's say we have substance $\ce{A}$, which is mixed with substance $\ce{B}$ to improve shelf-life because $\mathrm{p}K_\mathrm{a}$ of the substance $\ce{A}$ is $7.9$ and in mix the $\mathrm{pH}$ is $...
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Recently I wanted to clean up some lubricant on some keyboard switches. On some forums, an Isopropyl alcohol bath was recommended so I decided to give that a try and went to purchase some 91% ...
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If zinc is less reactive than sodium, then why does it still react with sodium hydroxide?
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What causes the melting and boiling points of noble gases to rise when the atomic number increases? What role do the valence electrons play in this?
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Can you answer these questions?
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I'm unsure why $\Delta_\mathrm{f}H^\circ$ within the NIST-JANAF Thermochemical Tables [1] is temperature-dependent. Wouldn't the $\Delta_\mathrm{f}H^\circ$ represent the enthalpy of formation at the ...
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I have a question regarding the reactivity of alkyl halide for E2. I know that the general rule is tertiary alkyl halide reacts the fastest with E2, and primary alkyl halide reacts the slowest.
I was ...
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I am trying to match the slater wavefunction with 6-31G basis set for first and second row elements. I have matche hydrogen, helium and lithium atom 1s orbital with Slater wavefunction using STO-6G ...
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