Mathematical Explanation When examining the linear combination of atomic orbitals (LCAO) for the $\ce{H2+}$ molecular ion, we get two different energy levels, $E_+$ and $E_-$ depending on the ...

Technically, alcohol is the name of a class of organic compounds containing one or several hydroxyl groups. Colloquially, the term "alcohol" is understood as you have described: A solution (of ...

I quote the Green Book by IUPAC, 2nd printing (2008), section 1.6, enumeration item 2: The overall rule is that symbols representing physical quantities or variables are italic, but symbols ...

How are the vapors transported? The additional question from the comments: Why [is] the amt. of vapours taken up proportional to vapour press. Why directly proportional? Why not nothing else? ...

What is Sand? Scope of this Answer In order to give a good answer, we first have to decide on the type of sand we want to talk about, because its composition is highly dependent on that. Is it beach ...

As correctly pointed out in the comments, the compound you present belongs to the class of sydnones. According to Hückel's rule, it should be aromatic, as the molecule is planar and contains $4n+2$ π-...

Reaction conditions As Watts et al. have shown, the decomposition products of this Fenton-like reaction strongly depend on the $\mathrm{pH}$ of the solution.1 If performed in acidic conditions, the ...

The mass of the sulfate is $m_{\ce{SO4}} = 0.610~\mathrm{g}$, the mass of the metal is $m_\text{M} = 1.250~\mathrm{g}$. With the molar mass of the sulfate anion $M_{\ce{SO4}} = 96.061~\mathrm{g\, mol^... View answer Accepted answer 10 votes The answer to this question hinges on two key questions: What kind of dust are we dealing with? How is the dust arranged (i.e. what is your experimental setup)? Which Dust? Firstly, I'm going to ... View answer 10 votes First of all, who says coordination complexes don't dissociate? The interesting chemistry happens right there, and without dissociation no catalytic coordination compounds would be possible! Now, the ... View answer 9 votes Two kinds of reactions have to be considered: Neutralisation of the weak acid with the strong base Secondary reactions from the products The neutralisation is fairly straightforward: $$\ce{HA + NaOH ... View answer Accepted answer 9 votes No. Just because the polymer is of one or the other kind does not let you say what industrial process actually synthesized it. Subsequently it is impossible to know what trace chemicals are left in ... View answer 8 votes The problem it boils down to is ease of communication. When you develop a new synthetic pathway, or you find the newest cancer drug, you want to tell the whole scientific community about it, and the ... View answer Accepted answer 8 votes Safety Warning Caffeine is a toxic substance. When following the advice below, always keep in mind the factors that will help you kill yourself if you are not careful! For more details you can ... View answer 8 votes Okay, here's what I did (and I highly encourage everybody to do this along with this tutorial-style answer, just so you get the feel for prepping and looking at data from the world wild web). Data ... View answer Accepted answer 8 votes Actually, the alpha particle contains two protons and two neutrons. It is what is emitted from the nucleus under alpha decay, giving off what was first classified as alpha radiation by Rutherford at ... View answer Accepted answer 8 votes In a fully covalent bond, you only have the mixing of the orbitals, as you said. But it's not only that, you also have coulomb interactions between the nuclei, that slightly raise the energy of the ... View answer Accepted answer 8 votes The simplest types of chemical formulas are called empirical formulas, which use only letters and numbers indicating atomic proportional ratios (the numerical proportions of atoms of one type to those ... View answer Accepted answer 7 votes Outline There are three main points of interest in the titration graphic, and two you have found yourself. The three points are The start at V_\text{titr}=0 Halfway to the equivalence point at V_\... View answer Accepted answer 7 votes The electron configuration of carbon is canonically written as 1s22s22p2. What you now can do is invoke orbital hybridization and combine the electrons in the 2s and 2p orbitals. Then you get sp3 ... View answer Accepted answer 7 votes You can pour anything into your pen. Is it a good idea? Most likely not. Is it dangerous? You bet! Is it a good idea to play with? NO! Whether it is legal or not to create such an object, you'll have ... View answer Accepted answer 7 votes We assume 1st order kinetics in hypochlorite and 1st order kinetics in the color. Putting this in the equation we get the following:$$\frac{\text{d}[\text{Red}]}{\text{d}t} = -k\, [\text{Red}]^1 \, [\... View answer Accepted answer 7 votes For solids, the binding energy is what makes the crystal (if you will) hold together. It is what makes the individual constituents of the compound bind together. Adsorption however is an entirely ... View answer Accepted answer 7 votes "Metal" is a classification used by chemists and usually means something along the lines of "this electrically conductive, usually solid element that is deformable". The other way around: Chemists ... View answer 7 votes Some of the electrons will react with positrons formed during the fusion processes; they annihilate each other and give off high-energy radiation (also called gamma rays): Source But this process ... View answer 6 votes How does a proton create a magnetic field that influences the neighboring protons (mainly) trough bonding and not trough space? A proton doesn't interact with another proton by producing a magnetic ... View answer Accepted answer 6 votes General steps to figure out the polarity (or at least relative polarity) and subsequently the relative boiling point of compounds: Acquire the correct geometry Estimate dipole moments Sum up ... View answer Accepted answer 6 votes Here's how I approached the problem. Plot the Data Below is the plot I quickly hacked together, and a fit of the form$g(x) = a\cdot x$. (Note that I do want the line to go through (0,0) because the ... View answer Accepted answer 6 votes The gas was one (or a mixture) of the noble gases, as every other gas is composed of more atoms than molecules. Example Helium:$1~\text{mol}~\ce{He}~\text{gas} = 1~\text{mol}~\ce{He}~\text{atoms}\$ ...