# All Questions

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### The bond in coordination complexes

This is a very basic question and I'm surprised it only just struck me. The nature of the bond in coordination complexes is a coordinate covalent bond. Only the ligand donates electrons for bond ...
2k views

### what is the name of the molecule that has the greatest number of different atoms? [closed]

What is the name of the molecule that has the greatest number of different kinds of atoms? For example, H2O is water has 2 different kinds of atoms which are H and O. For example, C6H12O6 is ...
18k views

### What's the relationship between Van der Waals forces and hydrophobic interactions?

A question on a past exam for a course I'm studying for asks: What's the relation between Van der Waals forces and hydrophobic interactions? From what I understand, Van der Waals forces are ...
154 views

769 views

### Concentration, how to determine grams of NaCl needed

Disclaimer: It has been a very long time since I have done any chemistry. My friend posted this question on social media, I've copy+pasted it here: Exactly $16.0~\mathrm{ml}$ of a solution A is ...
188 views

### Generally available fluid with good heat transport properties

I have designed a container which is heated up and has to heat up some tube-coils of water inside of it. This container is filled with a fluid that can help store and transfer the heat received from ...
336 views

### Heating CrCl3(bpy)3 — isomerism and ligand exchange

$\ce{CrCl3(bpy)3}$ (A) when heated forms (B) which has the formula $\ce{CrCl3(bpy)2}$ and has one free $\ce{Cl-}$ per mole of (B). B can react with ethylene diamine ($\ce{en}$) to form (C) which has ...
6k views

### Reaction involved in Combustion of Nitrocellulose-Nitroglycerine(NCNG) solid propellant?

I'm working on solid propellant based microthrusters and I am using NCNG as the solid propellant. I want to know the reaction taking place and the mass fraction of the products obtained on combustion ...
76 views

### Explain isotopic uranium/perchloric acid digestion [closed]

What is happening in this video? Can you explain this technically as well as in layman's terms? I'll summarize it. I see a technician moving fuming mixtures of presumably uranium and organic ...
248 views

### Mistake in Wikipedia article on fugacity?

The Wikipedia Article on Fugacity contains statement The contribution of nonideality to the chemical potential of a real gas is equal to RT ln $\phi$ Here $\phi$ is fugacity coefficient.I think ...
2k views

### How could alcohol be made into a powder?

In the news recently is 'Palcohol', powdered alcohol, that you add to water or existing liquids to make it alcohol. Presumably this would dissolve and break apart into alcohol and {some other compound}...
517 views

### Bond angles in PDB

people I've been trying to adjust the bond angles in a protein data bank (PDB) file, but I'm a novice when it comes to computing so I would like to ask your assistance. I have a file for metamizole, ...
924 views

### Multiplication of the reaction and Equilibrium constant

\begin{align}\ce{2A + 2B &-> 2C }\\ \ce{A + B &-> C}\end{align} Why does the equilibrium constant change? And why the rate of the first reaction square the rate of the second? I ...
14k views

### Carbon monoxide detection without a detector

I have just been waken up by an alarm and found out that my neighbour did something terrible with his lighter. Luckily, there was no fire, only a plenty of smoke, and our flats were hermetically ...
3k views

### Major product formed when 1,1,1-trichloropropane is treated with aqueous KOH

What are (is) the product formed when 1,1,1-trichloropropane is treated with aqueous potassium hydroxide? I think the major product should be propionic acid, but I'm not sure.
457 views

### How can I carry out a titration to identify mercury in wastewater?

First, I would like to do a some form of extraction to only get the mercury, then followed by a titration to identify the concentration or the presence of mercury.
1k views

107 views

### Is the end of a cigarette on fire when lit?

Is the end of a cigarette on fire when it is lit? Or is it smoldering? Is there a chemical difference between the two?
2k views

### Calculating the partition function based on molar heat capacity

Given the molar heat capacity of a partition function as a function of temperature, how would one determine the partition function? Say the molar heat capacity = $\alpha T^2$
1k views

### Bond angle of nitrous acid [duplicate]

Why are there two possible bond angles for the nitrous acid molecule? After perusing Wikipedia I found that there are both cis and trans forms of the nitrous acid molecule. I also note that the cis ...
123 views

450 views

### Proving RTln($a_i$) equal to non PV work done by system,where $a_i$ is activity

We know that chemical potential is defined as ${\mu}_i={\mu}_i^{standard}+RT\ln(a_i)$. Here $a_i$ is the activity of $i^\text{th}$ component of solution. In case of gases instead of $a_i$ it is $f_i$ (...