# All Questions

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### Stability of butene

Why is isobutene (2-methylprop-1-ene) more stable than cis-2-butene ((2⁠Z)-but-2-ene)? I can't find a reason as both of them have the same number of alpha hydrogens.
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### What is a good substitue for monoethanolamine in creating conductive silver nanoparticles?

In this paper (https://pubs.rsc.org/en/content/articlepdf/2017/ra/c7ra05125e) and a few others, chemists create PAA-coated silver nanoparticles in a colloidal conductive ink. (Mods - I cant seem to ...
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### Fractional index in a chemical formula of metal oxide

I have just read an article in which they used $\ce{WO3}$ and $\ce{WO_{2.9}}$ as precursors, whose objective was to form $\ce{WS2}$, in an atmosphere of argon by CVD. In one boat there is the powder ...
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### How do we calculate the force of a kinesin molecule? [closed]

In a physical chemistry book, we learn how to calculate the force of lifting yourself up against gravity. The force is equal to the body mass times gravitational acceleration. Then in the next problem ...
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### How can I redisolve and remove hardened baking soda [closed]

I have used baking soda in a commercial sprayer tank, and regretfully did not drain it out in a timely manner. I dissolved it once but then it re-hardened into a solid lump (about 2 inches thick). I ...
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### How can the rate of reaction between thiosulfate ion and acid be calculated as v = 1 M/Δt? [closed]

The experiment is done in the following way: Sodium thiosulfate is added in a beaker (the concentration is noted). Acid is added (the same amount each time). Time is taken till the reaction reaches ...
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### Why conjugate base/acid needed in buffer solution? [closed]

If I talk about the CH3COOH,CH3COONa acidic buffer solution , CH3COOH --> CH3COO- + H+ Why the conjugate salt is needed ?? Why it can't be like that the addition of extra H+/OH- neutralizes by ...
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### Dilution of Ca(OH)2 and its pH [closed]

A basic solution of Ca(OH)2 was diluted until a final concentration of 10^-9 M. What is the pH?
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### UV of product vs UV of reactant for a diels alder reaction [closed]

I am really stuck on how to interpret the change in wavelength and absorbance of my synthesized product and comparing it to the given UV of the reactant. I am supposed to include the shift in ...
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### Characterization of amorphous compounds [closed]

I need to characterise my dried precipitate, dried at temperatures between 100-120 deg cel, for various samples. I use Match! software by crystal impact to analyse XRD raw files. The problem is that, ...
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### Effect of shock waves on the chemical evolution [closed]

How do the shock waves affect the chemical evolution of interstellar medium or circumstellar medium of evolved stars etc?
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### Charge and Discharge of a Battery [closed]

I'm a student who majors Chemical Engineering. I just have a question shown as below. First of all, I don't understand the answers of both 1) and 2). In my opinion, the answers should be switched. ...
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### Orientation of Nitro group w.r.t aromatic system [closed]

How do I know about orientation of nitro group with respect to aromatic system.
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### How to obtain the linear form of Redlich Peterson isotherm model by algebraic transformation or any other ways? [closed]

The Redlich Peterson isotherm model is known as: \begin{aligned} q_e=\frac{AC_e}{1+BC^g_e} \end{aligned} Is there any way to obtain the linear form of this equation by algebraic transformation ...
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### PdPS interlayer distance [closed]

PdPS is being considered as a layered material but when I look at its crystal structure it does not look like that. Fo example I could not figure out its interlayer distance. Does anyone familiar with ...
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### Strong exothermic mixing of two 'safe' liquids

I have read (thanks to Stack Exchange) that mixing water and sulfuric acid is exothermic, as is NaOH and HCl. Are there two 'safe' liquids that can be mixed and produce anywhere near the same amount ...
51 views

### Memory foam chemicals from pillow spoiled bed and rendered it useless [closed]

I have recently purchased a memory foam pillow and in two days i ve experienced breathing problems and stomach problems and eyes irritation due to the harsh toxins in it and I returned the memory foam....
43 views

### Sodium hydride 60% dispersion in mineral oil [closed]

I've got a bottle of sodium hydride 60% dispersion in mineral oil. It's not "in mineral oil" it's just powder with an oil coating. I'm using it in an inert reaction, is there a way to remove the oil?
56 views

### Is the speed of sound the fastest rate that a chemical reaction can progress through a substance?

I read that a martensitic transformation can travel at the speed of sound in that material. Is that confirmed as being the fastest speed of a chemical reaction (transformation)?
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### What example may there be that demonstrates an anion who's atomic radius becomes greater than 100% of it's non-ionized form? [closed]

This question is in regard to the idea of nuclear efficiency charges of atoms. If an atom loses electrons, it's volume reduces. The reduce in it's volume has limits and will not go below a certain ...
40 views

### Reason for double acylation of ferrocene only occurring with certain reagent combinations

Can anyone explain why the acylation of ferrocene produces the following results: Ferrocene + acetic anhydride + AlCl3 ==> mono-acylated ferrocene but: Ferrocene + acetyl chloride + AlCl3 ==> di-...
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### Could Nanorobots use DNA base pairs to execute actions? [closed]

I just started researching the nanotechnology field, including current research, what the holy grail of nanotech looks like and what are the limitations with todays technology. It would be very ...
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### Glucose oxidase calculation for Biosensor film? [closed]

I am trying to immobilize glucose oxidase (GOx) on a thin film. However, before doing that I need to make necessary calculations. According to given data on Sigma out GOx from Aspergillus niger has a ...
103 views

### Solubility Of Benzoic Acid [closed]

Why is benzoic acid well soluble in benzene (and other unpolar solvents, see e.g. wikipedia). What causes the hydrogen bonds in the solid to break? Something (i.e. polar and ionic substances) is ...
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### Can I determine the rate law order from stoichiometric coefficients?

I've read in two books, and seen in three separate videos courses, that you cannot determine the rate law order from stoichiometric coefficients. Then, I have seen homework and "practice" problems ...
41 views

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### How to calculate the concentration of a solution [closed]

So I’m trying to calculate the concentration of a solution made by mixing a powder with water. Concentration = mass(powder) / total volume of solution Total volume of solution = Volume(water) + ...
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### Determining sulfate content in Mohr's salt

I am practicing problems for my chemistry test and I am stuck on the following problem: The value of $x$ in $\ce{Fe(NH4)2(SO4)2 ⋅ xH2O}$ can be found by determining the amount, in moles, of sulfate ...
I am confused on how to set up my equations to use in the solver. I have an equation $$\ce{A + 2B -> C}$$ As a given, it is first order in A and second order in B. What I need to do is to solve for ...