All Questions

Show that the following processes are irreversible. (a) Gas freely expands from V to V+dV (dV>0) adiabatically, and (b) Gas expands adiabatically from p to p+dp (dp<0) via the Joule-Thompson ...

I have a research about electrospun membrane synthesis where I dissolve PLA pellets in chloroform:methanol (3:1) for 3 hours and also PCL pellets in chloroform:methanol (3:1) for 3 hours too. Another ...

I am trying to solve this question: Find the major product of the following reaction: Now we could either do electrophilic addition on the alkene or do dehydration of alcohol. These two ...

Does glycerin still have the same magnetic properties as glycerol can someone please tell me it is for a science project that i need to explain just so i can make a visual representation of how it ...

Identify the most acidic hydrogen atom in the compound below: $$\ce{NC-CH2-CH2-CH2-OH}$$ My teacher said that the $\ce{H}$ connected to $\ce{O}$ is the most acidic since $\ce{O}$ is more ...

2.4g of a compound of H,C,O gave on combustion 3.52g of carbon dioxide and 1.44g of water. the RMM of the compound was found to be 60 what is the masses of C,H,O what is the empirical formula of the ...

In the recent years, computational chemistry community has focused on Machine Learning algorithms to predict molecular properties. Unfortunately, many of the authors of such papers are not chemists, ...

I want to make the carbon black paste and pelleterized it. What solvent can be used to heat up after carbon is formed?

The rate of diffusion of two gases A and B are in the ratio 16623 is the ratio of their masses present in the mixture is 2 is to 3 then

I clean vinyl records with an ultrasonic record cleaning machine. Would propylene glycol be good to use as a surfactant in a 1 - 2 % concentration with distilled water? Would it harm the vinyl record?...

I have a 1g per 80ml stock solution.I would like to create a 0.001g per Liter solution what volume of the stock solution should I add to make up a 1L solution?

My book states that transition state has highest energy out of Reactants and Products . My question is why ? If we follow law of conservation of energy shouldn't the extra energy given + existing ...

Is it possible to write the following chemical reaction in one compact balanced form instead of being two separate sections at the right hand side? $\ce{CaI2(aq)}$ + $\ce{2NaOH(aq)}$ + ($\ce{2H+}$ + $...

I was solving, my homework question, using chemical equivalence, question was this $448\ \mathrm{ml}$ of $\ce{SO2}$ at ntp are passed through $100\ \mathrm{ml}$ of a $0.2\ \mathrm N$ solution of $\...

I am trying to reimplement the functionality of the classical program ORTEP for producing thermal ellipsoid plots of a crystal/molecule in a modern computer language. Unfortunately, I am having ...

Aqueous sodium hydroxide is known to react with aluminum foil in an exothermic, hydrogen-gas releasing reaction like $$\ce{2NaOH(aq) + 2Al(s) + 2H2O(\ell) → 2NaAlO2(aq) + 3H2(g)}$$ However, on ...

There's something about Chemistry that I need to clear up. Naming compounds. So I heard that there are different ways to name a compound depending on what it is. But I can't keep track of it all! ...

Consider the following consecutive second-order irreversible reactions carried out in a batch reactor: $$ \begin{align} \ce{A + S &->[$k_1$] X}\\ \ce{X + S &->[$k_2$] Y} \end{align} ...

I am trying to estimate the redox potential of an excited state as described in this reference. The paper says: The reduction potentials associated with the excited states cannot be directly ...

How exactly do chemical signals store & transmit information , eg. How do the chemical reactions in the eye paint a picture ? There must be information stored in the signals that tell the brain ...

I don't get why? Is it to check if it's safe?

For a school project, about clean energy, me and my team are trying to build an iron battery. We are using a piece of iron (anode), potassium hydroxide (electrolyte), carbon electrode (cathode) ...

To be honest, I would like to know how $\Delta G^*$ is different from $\Delta G$ in general and whether the star has any other significance. Now, moving to the second question. I was asked to find $\...

When using distilled water to wash off real soap, my hands still feel slippery. After doing some research it seems that the reason for this is due to the fact that soft or distilled water is incapable ...

The first ionization energy of chloride is significantly greater than that of sulfur. I suggest that this is very expected as the effective nuclear charge of chloride is higher and additionally, ...

I'm interested in software packages that can answer the following kind of question: If I mix 30mol% $N_2$ and 70mol% $H_2$ together at 2 bar and 2000C, what is the equilibrium composition after all ...

I was reading up on how chelation leads to more stability of a complex, and then I came across this weird trend given by my professor in class as a contradiction, with no explanation. I'm curious what ...

I am currently analysing a chemistry experiment which has been conducted and there are some steps which I cannot understand about the procedure and methodology which the scientists have used. Being a ...

In an aqueous solution of $\ce{NaOH}$ exposed to the atmosphere one can probably expect some degree of $$\ce{NaOH(aq) + CO2(g) -> NaHCO3 (aq)}$$ But, what would happen if just a solid block of $\...

I hope someone may help me. I don‘t know how to determine the diastereoselectivity of the product of the Pauson Khand reaction in generally. In the following I’ve got 3 practice examples,however in ...

I did destruction for my sample on my research, but the sample is dry, no water anymore. I used to do it like 55 ml to 20 ml, but it was dry. Any solution for this? Except do sampling again.

I can't seem to get the answer that appears on the back of the book Here is what i did: a) $K_p=K_x p^{\Delta N}$; in this reaction $\Delta N =-1$, then $K_pp=K_x$ from $\Delta G=-RT\log K_p$ I ...

Today I experimented with different solvents and solutes and was a bit surprised by one result. When I added ethanol to dilute sodium bicarbonate and tapped the test tube against my palm to mix it, I ...

A paper I'm reading makes the claim that Assam Bora rice starch is not digested in the upper GIT and cites: "Ahmad MZ, Bhattacharya A. Isolation and physicochemical characterization of Assam Bora ...

How many grams are in 8.200e22 molecules of N2I6 This is what I've done to date though I don't know if it's correct N2I6= 789.414 g/mol 8.200e22 / 6.022e23 = .136 mol 789.414 g/mol * .136mol= 107.36 ...

how much does it takes a particle with size of about 200nm go through a dialysis membrane with toff 12kDa.

How many Oxygen is produced from 1 liter of water? Answer is needed to be convert in ( Liters of air ) e.g Human consume 7 to 8 liter of air in one minute.

I am doing a school project which involves color changing based off of temperature, and I need a thermochromic dye that changes color at 32 degrees Fahrenheit. Does anyone know where I could find some ...

Wikipedia has a thorough article on the benzodiazepines. Of course, it is written primarly from the pharmacological point of view; but there is also the "Chemistry" section, which includes the IUPAC ...

I was asked the the hybridization of Nitrogen Chloride, and my thought process was that it should be $sp^2$ because of back bonding. The lone pair on the Nitrogen will be donated to the vacant d ...

I am trying to figure out what tools and methods I need to create a thoroughly mixed solution of the following component compounds: + 20 milliliters of liquid sunflower lecithin (very sticky and ...

Ethanoic acid + methanol ➡ methylethanoate +water

What’s the steps to complete this problem? I get confused when going from atoms to moles to grams. Would this type of question be like the same process for atoms to moles to grams?

I can't understand how to answer one of my Pre-Lab questions, it's going to be something really obvious but I can't find the fix for my answer from the supporting material... (This isn't cheating on ...

I was checking my RHF code and found a couple of bugs (which include getting incorrect eigenvalues and eigenvectors amongst other things). I suspect it's either an issue with my Hartree-Fock algorithm,...

Due to a recent switch in systems, we have to add 45% ethylene glycol to a maleimide reaction with Sulfo-MBS (m-maleimidobenzoyl-N-hydroxysulfosuccinimide ester) and a reduced oligonucleotide ...

Recently I ran out of dish washing detergent, so I decided to pick up one of the recipes online, to make my own "ecological" dish washing detergent alternative. The recipe was: Mix ingredients: ...

Is methyl radical a lewis acid ? According to me it is a lewis acid as any species can be considered as a lewis acid if it can accept an electron in its LUMO.

I recently learned that the number of subshells of a particular shell depends on the Azimuthal quantum number(l), which can have values from 0 to (n-1), where 'n' is the Principle quantum number. In ...

I've recently carried out an experiment trying to measure the boiling point elevation of water after adding 5M of NaCl and KCl. Although for some reason, KCl solution started boiling around 90 degree ...