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4 views

Shape and overlapping

In a solid the atomic orbitals of the atom overlap forming energy bands.I was wondering:Besides the fact the overlapping atomic orbitals must have approximately the same energy,must they also have the ...
-1
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0answers
10 views

How do I find major product of aromatic compounds halogenation?

I would like to ask, how do I find major product of aromatic compounds halogenation. For instance if I take propan-2-yl-benzen it is quite simple - because of electronegativity of propan-2-yl. On the ...
-2
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0answers
17 views

How to prepare 96% ethanol from 100% ethanol (200 proof)?

can someone please help me calculate how to make 96% alcohol using 100% ethanol (or 200 proof)? According to European Pharmacopoeia (EP), ethanol content is calculated from the relative density using ...
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1answer
15 views

Reduction of alcohol to alkane

I have been looking everywhere for hours now, and can't find anything on a simple lab reduction of an alcohol to an alkane that doesn't involve any "fancy" reagents such as tosylates, metal ...
-1
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0answers
26 views

Can I break a chemical bound with just the force of my hand? [duplicate]

In chemistry, bounding energy is at the level of the electron-Volt. Do I understand correctly that since this is very low, I could easily break a chemical bound just with my hand ?
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20 views

Cinnabar decomposition by heating optional method?

Is it possible to decompose cinnabar into $\ce{Hg}$ and $\ce{S}$ instead of $\ce{Hg + SO2}$ with roasting and heating. What conditions need to be satisfied in the new method?
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0answers
8 views

Calculating compound phases

Is there a pragmatic approach to estimating phases for compounds? There is not much connection between the heat-capacity of a compound and the heat-capacity of the elements it is made of. Heat ...
2
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0answers
8 views

Conversion factor for conductivity of an aqueous solution

I am not 100% sure if this is the right place to ask, but please point me in the right direction if not. I am designing a conductivity meter, and when it comes to displaying the results in mS/cm or µS/...
-1
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0answers
15 views

Extracting elemental sulfur from pyrrhotite [closed]

How can elemental sulfur be extracted from iron (II) sulfide? Thank you.
1
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1answer
8 views

Solute and Solvent classification in a Solution

When I look up the definition of solute and solvent, the definition by the Oxford English Dictionary is ...
1
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0answers
20 views

Trans/Cis Alkene with mCPBA products?

What is the different in stereochemistry between the product of cis alkene with mCPBA and trans alkene with mCPBA, I drew the products, they do look different but the configurations are the exact same,...
-1
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0answers
10 views

Heating of silicone oil (oil bath)

Is the temperature of plate same with oil temperature while using oil bath technique? If it's not like that how can we determine temperature of silicone oil as a regarding in increasing temperature of ...
-2
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0answers
13 views

Can ink manufacturing companies use isobutanol instead of n-butanol? [closed]

Will there be any harmful effect if isobutanol is used instead of n-butanol? Will there any major change in the final product?
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0answers
12 views

Which compound mixture(s) can yield rapidly solidifying product?

I am trying to find compound mixture(s) which can rapidly solidify on mixing and can air seal a ceramic pipe opening. The mixture has to solidify rapidly and reaction takes place at (rapidly cooling)) ...
-1
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0answers
13 views

Is the theory of Brownian Collisions and Coherence Domains in water compatible?

I've read some works of Emilio del Giudice about coherence domains in water. However I saw this interesting article on Brownian Collisions which make the formation of these coherence domains something ...
-1
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0answers
12 views

IUPAC Nomenclature using Iso alkoxy groups

Is the name of the compound 4-isopropoxy-pentan-2-one or is it 4-(1-methylethoxy)pentan-2-one... Are both the correct "systematic" names or am I messing up:'.
-1
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1answer
17 views

Distinguishing between chain isomerism and metamerism [duplicate]

Of all the examples that I could find for chain isomerism, most are alkanes and the rest are amines. i) Does this mean that when other functional groups show 'chain' isomerism it is termed as ...
-1
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0answers
21 views

Organic Chemistry: Hybridization

Is it right to say that the orbital of carbon is s2p2? sorry i forgot the basic. i'm working on steric #s for hybrids ( # of sigma bonds + the lone pairs) but how about just the carbon? i get it when ...
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0answers
20 views

Bomb Calorimetry Part 2

So I am very confused as to the calculations behind this. I am given a chart of data as followed:enter image description here So based on this chart, I had to calculate: The heat capacity of the ...
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0answers
12 views

Selectivity in Thermodynamically-Driven Silyl Enol Ether Formation, and Optimistic Avoidance of Protecting Group Chemistry

I am aware of the regioselectivity of silyl enol ether formation at an unsymmetrical ketone under 'thermodynamic conditions'. Does this selectivity extend to systems containing more than one ketone ...
-2
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0answers
33 views

Can a deprotonated compound act as an acid?

Under the Bronsted-Lowry theory of acids and bases, an acid is anything that can donate a proton. Would a non-metal anion like $Cl^-$ be able to act as an acid then? Does this further mean that any ...
0
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1answer
20 views

Catalyst and Inhibitors home experiments

My teacher assigned me a science experience involving catalysts and inhibitors at home. I think I understand the principle of it, but I fail to find possible experiments that I can do at home with a ...
-1
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0answers
19 views

Bomb calorimetry Calculations

So I am very confused as to the calculations behind this. I am given a chart of data as followed: So based on this chart, I had to calculate: The heat capacity of the calorimeter on benzoic acid ...
-1
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0answers
28 views

When do atoms hybridize, and what initiates it?

I am new to chemistry, and taking an intro course. We are currently learning about hybridization, which I am having some trouble understanding. Let's take carbon for example. I understand that a ...
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0answers
15 views

Why is stannous chloride a nucleophile when it has an empty p orbital? Why isn't it an electrophile?

I'm an undergraduate chemistry student so I apologize if this is a simple question, but in my lab we used stannous chloride in the presence of water and HCl as a nucleophile to attack 2,6-...
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0answers
15 views

pKb of a strong acid?

What does the pKb (or $K_b$) of a strong acid mean? For instance this link reports the Kb of HI, an extremely strong acid. Are they reporting the reaction constant of the reaction: $HI + H_2O \implies ...
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0answers
15 views

Methylmercury Formation

it's my first time posting nice to meet you all. So basically for my chemistry class, I'm supposed to figure out how mercury gets into water supplies and I found out that methylmercury is created when ...
-3
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0answers
34 views

Is there was to balance NaOH in H2O to give ions without ommiting water?

$$\ce{NaOH + H2O -> Na+ + OH-}$$ This seems impossible to balance so is the only way to show it by omitting water and adding aq state symbols? Easy, but seems like a cop out: $$\ce{NaOH(aq) -> ...
-3
votes
1answer
22 views

What happens when I mix vitamin C with Ammonium bicarbonate?

My intention is to eliminate the acid from the vitamin C, but I do not want to use sodium bicarbonate, because of the high content of sodium. I would like to use potassium bicarbonate but I am not ...
-4
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0answers
13 views

Finding the number of valence electrons in multielemental compounds

Suppose we have this compound Aluminium Phosphide(unit cell): Here the purple balls are phosphorus atoms and the yellow balls are aluminium atoms.Aluminium has 3 valence electrons and Phosphorus has ...
-1
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0answers
29 views

Compounds that smell like hydrogen sulfide

I'm writing a mystery novel, and I need to learn what can create a sulfurous odor, is it only hydrogen sulfide? I've read you can purchase hydrogen sulfide in gas cylinders. For the novel, ideally, I'...
-3
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0answers
8 views

Percent composition and empirical/molecular [closed]

What is the formula for lithium oxide? Using a periodic table, what is the theoretical percentage composition of lithium and oxygen in lithium oxide?
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0answers
14 views

Problem about spectroscopy [closed]

I’m very interested in this question, it’s about spectroscopy, so I’d like to ask you for your suggestions. How to show that CnHn(hydrocarbon) has just a single IR active C-H stretching mode?
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0answers
11 views

Relationship between self ignition and pressure for 91% isopropyl alcohol

We know that the self-ignition temperature for alcohol is about 750F/399C, but I can't find information on how that self-ignition temperature changes with changes to pressure (psi or bar). ...
-2
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0answers
18 views

What formulas do I use to solve each of these questions? [closed]

The starship enterprise uses the compound, B5H9 and oxygen gas as fuel. This is the balanced equation: 2B5H9 + 12O2 = 5B2O3 + 9H2O If one fuel tank holds 126 g of B5H9 and the other holds 192 g of ...
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0answers
21 views

Vitamin C decrease in cooked carrots

Does the decrease in Vitamin C content have anything to do with why Carrots taste different after being cooked?
0
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1answer
24 views

How to clean out a contaminated aluminum automotive radiator

I have a very expensive custom made automotive aluminum radiator that has had a mouse or mice nesting inside the top tank. I have removed most of the nesting material through the top inlet but I want ...
3
votes
2answers
254 views

Why does denaturation of albumen protein cause pH of solution to increase?

I'm interested in the denaturation of proteins by alcohols, specifically by ethanol. I have devised a simple experiment in which I inject solutions of ethanol (of variable concentrations) into ...
-2
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0answers
15 views

How to measure the solubility of nylon (or other polymers) in different solvents at different temperatures?

I have to find a suitable solvent for nylon (specifically nylon 6 and nylon 6.6) for reactions and for this purpose I want to measure its solubility in different solvents at different temperatures. ...
3
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0answers
25 views

Why are shells softening in the ocean?

I learnt about how ocean acidification can be described in terms of equilibrium. This is summarized in the textbook diagram below: However, this diagram doesn't explain to me why the shells should be ...
-4
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1answer
24 views

What is the difference between atom and nucleus? [closed]

Atomic nucleus-The atomic nucleus is the small dense region consisting of protons and neutrons at the center of an atom discovered in 1911 by EARNEST RUTHERFORD. Atoms are made up of a positively ...
-1
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0answers
20 views

Help calculating log P

What is the correct way to calculate log P of a drug? Two 3ml samples of 1%w/v solution of ibuprofen in octanol were prepared, a pH 2 buffer is added also. 0.5ml of the octanol layer is taken and ...
2
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0answers
21 views

Will changing the salt in the salt bridge change the voltage produced in a galvanic cell?

I have used zinc sulfate and copper sulfate as the solutions, and used zinc and copper electrodes. For salt bridge I took lithium, potassium, calcium, sodium and zinc nitrates. The results are as ...
-1
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0answers
19 views

How to write reaction mechanism for Synthesis of 2-bromo-1,2-diphenylethanol [closed]

Could someone help me with[ how to write the reaction mechanism? How should I start?
0
votes
1answer
31 views

Do water filters expire even if underused?

This filter rates a 3 month lifespan with 1210 liter capacity, but I expect to filter only 300 liters in 3 months. Is it still expired after 3 months - if so, why? What degrades a filter while it's ...
-3
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0answers
15 views

why sp3-sp2 bond is stronger than sp2-sp2?

So when i was learning about the stability of the alkenes specifically about hyperconjugation, i came across a statement that said sp3-sp2 bond is stronger than sp3-sp3 bond. Could anyone explain how ...
0
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0answers
20 views

Molar conductivity of a strong electrolyte

In 1910, Kohlrausch showed that the dependence of the molar conductivity of strong electrolytes is well described by the following equation: $$\Lambda_m = \Lambda_m^\circ-K\sqrt{c}$$ This equation, ...
-2
votes
2answers
54 views

How to make a python code that can read a .xyz file and find distance, angle and dihedral angle between atoms?

I want to make a python script that will load an xyz file. From the xyz parameters, I need to find the distance between atoms, angle and dihedral between atoms. Any help? EDIT: Sorry for not ...
-1
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0answers
11 views

Does steric hinderance matter in a SNAr reaction if both of the ortho positions are occupied by a bulky group?

Here in the fourth molecule the reaction rate should be less as its sterically hindered but the answer given is option 4. If steric hinderance does not matter then why do we have effects like SIP and ...

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