# All Questions

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### Benzalkonium chloride breakdown time

I wonder if and how long (approximately) it will take for benzalkonium chloride (shown above; $n = 8, 10, 12, 14, 16, 18$) to breakdown (degrade fully or partly) in a closed water loop with continuous ...
63 views

### Is it possible to observe ATP energy transport in table experiment?

Is it possible to take AMP or ADP, then phosphorylate it convert to ATP to charge with energy, then transport to other place an then observe energy freeing? In table / home / school experiment?
157 views

### How do non-sublimable solids exist in equilibrium with vapour?

How do non-sublimable solids exist in equilibrium with vapour? All substances exist in equilibrium with their vapour, something I learned from Jan's comment. But my question is how does that happen ...
663 views

### Can a system of 2 consecutive biphenyl systems be optically active , even if any adjacent biphenyl systems aren't optically active?

This question came in an online test, where they asked whether or not 22,26-dibromo-12,32-dichloro-23,25-diiodo-16,36-dimethyl-11,21:24,31-terphenyl was optically active. The answer is that, it is ...
4k views

### What is an active centre of a catalyst?

I was studying catalytic poisoning and read that in temporary poisoning, the poisoners are held at active centres by weak forces. What is an 'active centre' in this context?
374 views

### Is there safe chemicals for making voice pitch or bass?

I'm looking for safe experiment that can pitch and bass my voice.finally I find a video that do it but he said "not try in home,ok..?".Is there safe tool or chemicals for Manipulation of the larynx is ...
67 views

### Water side-reactions in organic electrochemistry (redux) [closed]

(note: this is a reposting of part of my original post which I was told had too many questions in one post) Please bear with me as I am a chemistry newbie, but I am autistic and have recently ...
2k views

### Why are aqueous solutions included in the equillibrium constant but liquids are not? [duplicate]

I understand solids are insoluble and will just sit at the bottom of the vessel so we don't include them. But I am confused as to why aqueous solutions are used in the equilibrium equation but ...
80 views

3k views

### Net conductivity of mixtures

If we have a solution, of conductivity k1, and another solution of same volume having conductivity k2, then what will be the conductivity if I mix the 2? I think that net conductance should be the sum ...
2k views

### Toothpaste and water

I noticed when brushing my teeth that toothpaste causes water to spread away from it. If you put a bit of toothpaste water mixture on your finger and touch it to a wet sink you will see the water on ...
1k views

### Which elements exhibit allotropy?

I was just reading this article about allotropes which relates allotropy with some specific elements and also this wiki article. Also some other articles some of which relate allotropy with catenation ...
18k views

### Why does rotating a double bond break the bond?

It is well known that double bonds are "stiff" and make particles less likely to rotate around the bond. But why? What makes it so that the bond has to be orientated a specific way?
41 views

### What guarantees that there is a thermodynamic equilibrium in a closed chemical reaction network independently of the mass-action kinetics? [closed]

I would like to know according to which we can state that there is a unique equilibrium of a closed chemical reaction network (at constant circumstances) without supposing mass-action kinetics if time ...
1k views

### Melting point of ocean salt: eutectic?

I'm interested in the melting point of ocean salt. While sodium chloride has a melting point of 801 °C, ocean salt contains 15 % other ions, mainly sulphate, magnesium, calcium and potassium (the ...