# All Questions

28,985 questions
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### Point group from mono to bulk MoS2

Many articles say even numbers of layers or bulk crystal MoS2 have D6h point group and odd numbers of layers (including monolayer) MoS2 have D3h point group But whenever looking at the figure of ...
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### Convergence failure

I trying to run a DFT calculation with the following job input: ...
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### Carbonic acid, bicarbonate in water [on hold]

When you add CO2 into water, carbonic acid is created. From carbonic acid (H2CO3), HCO3 + H is formed. When CO2, and H2CO3 leave the water, does HCO3 leave as well, often measure as kH, carbonate ...
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### Adding apple cider vinegar to a solid DIY deodorant

If I wanted to add a bit of apple cider vinegar to my oil based deodorant, to increase antimicrobial properties, would this cause me to need a preservative? My deodorant is not water based, so I don't ...
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### How can one distinguish an IR spectroscopy alcohol band on an organic molecule versus the alcohol bands from water in the sample?

I'm reading this IR spectra and trying to determine if the large broad band at 3388 is alcohol from an intermediate or from water in the sample. The details of the reaction, conditions, and mechanism ...
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### Can you lower the alcohol concentration of a drink using vegetable oils?

The log POW of ethanol is −0.18 according to Wikipedia, i.e. in a two-phase system ethanol would preferrably accumulate in the aqueous phase, but not by much. Suppose I wanted to lower the alcohol ...
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### How can I make 2M of sodium hydroxide solution from 25g of sodium hydroxide pellet? [on hold]

I have 25 grams of sodium hydroxide pellet. I want to prepare 2M of sodium hydroxide solution. How do I go about it, please?
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### Maximum number of atoms in the ground state

I was given the following question. A sample contains $100$ identical and hypothetical $H$-like atoms ( $Z$ may be fractional). Out of the given atoms, some are in the ground state, while others ...
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### Coordination compounds ean rule [on hold]

Which complex follow the sidgwick rule Ean rule where M =24?
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### when water and alcohol are mixed, why don't the boiling points change? [on hold]

when water and alcohol are mixed, why doesn't the boiling points change? The vapor pressure should increase so the atmospheric pressure will equal to the vapor pressure faster, how do alcohol and ...
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### Thermal conductivity of materials [on hold]

Why does having delocalised electrons increase a materials thermal conductivity?
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### If keto is attached to two carbon rings, enol alkane is always formed towards larger ring, why? [on hold]

Can you explain me why does this happen ?
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### Reaction of metals during electrolysis? [on hold]

I am currently looking into what metals can be used for electrolysis....more specifically to split hydrogen from oxygen ....im curious as to what I may use metal wise that won't leave contaminants in ...
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### Will a nail in a bottle rust without water being in the bottle? [on hold]

Will a nail rust if it is in a bottle without water? Any help is appreciated as this is for a school project.
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### Is Organic Chemistry Neccessary in the Med field [on hold]

Is it necessary that one who wishes to go into the Medical field must study Organic Chemistry.
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### MO diagram of BeH₂

I was learning about the MO diagrams of triatomic molecules and was left slightly confused about $\ce{BeH2}$. A picture of the MO is shown below: When looking at the $\mathrm{1s}$ combinations, I ...
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### Hydrogen peroxide and carbon as hybrid rocket propellant?

I was thinking that a hybrid rocket could be made using hydrogen peroxide and activated charcoal or some other carbon source. Step 1: Decompose hydrogen peroxide to steam and oxygen, as in a ...
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### Could there be a class of drugs beyond, similar to barbiturates and benzodiazepines? [on hold]

I'm talking about group of drugs similar to them but different though.Is there anything beyond benzodiazepines?
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### Basicity of subsituted amines

In comparing hydroxylamine, hydrazine, and methylamine for basicity, the order of increasing basicity is hydroxylamine < hydrazine < methylamine. I tried to reason this trend based on electron ...
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### What happens in this reaction! Some hints needed

I understand step A involves reductive ozonolysis. and that step B is addition involves addition of ammonia to the carbonyl site to form imines. But what does the sodium salt of trichloroacetic acid ...
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### Is the exchange interaction always less in value than coulomb interaction? (Absolute values of both.)

I wonder for 2 electron interactions whether exchange interaction (K) is always less than the coulomb interaction(J) value in all cases (HF or DFT) or there is no such necessity? Does it depend on the ...

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