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For questions regarding how something is referred to.

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What is a prehydrozate?

I am trying to increase the lignin and cellulose contents in apricot stones using hot water extraction and I came upon a term I am not familiar with. What is a prehydrozate? Would it be the apricot ...
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1answer
25 views

How to quantify the adsorption affinity of gases?

Is there a term/quantity which shows how 'sticky/adsorptive' a molecule is? I am interested in gas adsorption on steel surfaces in our mass spectrometer and would like to estimate which gases have a ...
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1answer
16 views

Can two atoms with the same amount of electrons but differing electronic configurations be considered isoelectronic?

Can two atoms with the same amount of electrons but differing electronic configurations be considered isoelectronic? For example, would we consider yttrium(I) $(\ce{Y+})$ with configuration: $\ce{[Kr]...
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1answer
486 views

What is “mechanistic duality”?

I am doing a general overview of different kinds of dualities present in science. I am quite well versed with the dualities in physics and mathematics. I was searching for dualities in chemistry, ...
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3answers
22 views

What makes Citrate or Citric Acid an acid?

As far as I know, an acid is something that gives off a proton or hydrogen ion $H^{+}$. But when I look at Citric Acid, There are three $COO^{-}$, which I think is a carboxyl group, that lacks $H^{+...
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1answer
36 views

Redox and acid-base reactions in planetary atmospheres

I'm a chemistry layperson looking for chemistry expertise regarding atmosphere composition. Earth's atmosphere is oxidizing, but it was somewhat reducing in the distant past before photosynthetic ...
2
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1answer
56 views

What is 'power law' kinetics?

I've come across a lot of instances where 'power law' description of the kinetics was mentioned, but I cannot think of any integrated rate law that follows something like: $$A(t)=bt^n+c$$ I'm pretty ...
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2answers
84 views

Understanding Equivalent Wyckoff positions

I'm somewhat confused by the concept of Wyckoff positions in crystal structures. From Quantum Chemistry of Solids by Robert Evarestov, the definition of a Wyckoff position is "all the crystallographic ...
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1answer
33 views

Amount concentration versus number concentration

The IUPAC Gold Book defines Amount concentration Amount of a constituent divided by the volume of the mixture. Also called amount-of-substance concentration, substance concentration (in ...
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0answers
132 views

What does “intensity of light” mean? [closed]

In this lecture from MIT, the professor defines the intensity of a wave as the square of the amplitude of the wave. But, at the same time, the professor defines the intensity of light as the number of ...
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1answer
52 views

Terminology for describing nuclei participating in metallic bonds

I've read many times that in metals (for example sodium metal), what constitutes the crystal lattice is an arrange of atoms, since no electron is given or lost, they are just shared between all the ...
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1answer
213 views

Why is Rf called Retardation Factor?

I understand that $$R_\mathrm{f} = \frac{\text{distance traveled by center of analyte spot } (b)}{\text{ distance travelled by solvent front } (a)}$$ What I do not understand is why this is called ...
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1answer
47 views

Is there a blanket term for all variants (both nuclides and ions) of a chemical element?

I'm hoping to catalogue the various nuclides and oxidation states of an element but can't find a single term that describes them all, save for "chemical element variations". Is there a specific term ...
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3answers
68 views

What is the difference between “adding a liquid” and “diluting to a liquid”?

Place $\pu{20.0 g}$ $\ce{NaOH(s)}$ in a flask and dilute to $\pu{1.00 L}$ with water. Place $\pu{20.0 g}$ $\ce{NaOH(s)}$ in a flask and add $\pu{1.00 L}$ of water. How exactly do these two ...
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31 views

Photodegradation vs photooxidation

I have been writing a paper about polymers being "aged" by light. Most of this aging happens because light hits atmospheric oxygen and either excites it to its singlet state or causes atmospheric ...
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1answer
157 views

Term for compound of carbon, hydrogen, and oxygen

Is there a term for a compound of carbon, hydrogen, and oxygen? There is hydrocarbon for a compound of carbon and hydrogen. There is also carbohydrate but that requires the ratio of hydrogen to ...
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1answer
61 views

What is “ölsaurem Alkali”

I read a technical German book that refers to "ölsaurem Alkali" which apparently means "oleic acid alkali". How could it be both an acid and an alkali?
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1answer
36 views

What is an alloy called when it melts at the same temperature as something else?

What is an alloy called when it melts at the same temperature as something else? For example, if there is an alloy that melts at the same temperature as glass then it will be susceptible to enameling ...
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1answer
36 views

Meaning of Molecular Oxygen

Does molecular oxygen just mean the oxygen molecule? Or could it refer to a certain state of the molecule (eg. gas or aqueous)?
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1answer
96 views

What is the difference between an 'elementary reaction' and a 'concerted reaction'?

In the IUPAC Gold Book: elementary reactionA reaction for which no reaction intermediates have been detected or need to be postulated in order to describe the chemical reaction ...
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1answer
172 views

What does “the magnesium salt of EDTA” mean?

I am attempting to prepare an ammonium chloride/ammonium hydroxide buffer solution ($\ce{pH}=10 \pm 0.1$) for titrating water hardness with calgamite and EDTA. In the 17th Edition of the Standard ...
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1answer
39 views

Neutral anions in salts and strong acids are similar - is it a coincidence? [closed]

Recently I was studying salts and my professor provided a list of anions which are considered neutral in salts (that is, they do not change the $\mathrm{pH}$ of an aqueous solution when added as a ...
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1answer
160 views

Is there a terminology contradiction about whether the conjugate of a strong acid is a “weak base”?

(Please note, I am not simply asking, "Is the conjugate of a strong acid a weak base?" I'm asking about the contradictory ways those terms seem to be used.) I was revisiting strong/weak acids/bases ...
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1answer
39 views

What are good naming conventions for chemical properties? [closed]

I've noticed (as I'm not a chemist) that some terminology in chemistry seems very confusing to me compared to how I'm used to view symbols and relations in mathematics. For example, today I was ...
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1answer
470 views

How to calculate the molarity of a gas?

If I have $X$ moles of a gas and I put them in a container at constant volume $V$, will the molarity of the gas then be $X/V$?
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1answer
188 views

What does “sine” mean?

I see the suffix "sine" (seen/sin) a lot, adenosine, cytosine, lysine, tyrosine, etc. Most of where I hear it is in amino acid R groups, but it's usually only the prefix that is recognized as ...
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1answer
21 views

How do we indicate a volume fraction like 0.05 in procedure descriptions?

I'm translating a Russian biotech text, and there's this sentence with a number without measurement units: The contents of the wells were discarded; the wells were washed three times with 200 µL of ...
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0answers
74 views

What exactly is an “electron-sponge”?

What exactly an "electron-sponge" [behavior/action/property/system] nickname is, and what makes a material an "electron-sponge" (preferably, quantitatively)? From what I found, it's typically a ...
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0answers
208 views

What is the difference between precipitate and deposit?

In a book, I read that copper is the deposit from the copper sulphate – zinc reaction. In the same book, there was a definition of precipitate: Precipitate is a solid substance that deposits from ...
11
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1answer
3k views

What does “to the left” mean?

However, the concentration of hydronium and hydroxide ions will be very, very small; in fact, the equilibrium that's established in solution lies so far to the left, that only 18 in 1010 molecules of ...
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2answers
2k views

Why do most drugs (eg: oxycodone) have seemingly arbitrary names?

How do some medicines derive their names? For instance, is the name oxycodone somewhat arbitrary? I am not well-versed in Chemistry (1st semester student) but does the prefix oxy- imply some ...
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1answer
61 views

What are the following equations called?

Our teacher was writing out the following ways of expressing redox and she used a particular term for what these equations are called. When we write out the following what is this called? Its a way to ...
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0answers
103 views

What kind of chemical used in a chromatography run could be denoted with the letters D.H.?

A fellow translator is having trouble translating (into Russian) the mysterious D.H. abbreviation in the following passage: Slight variations of the ratio of the mobile phase constituents or ...
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2answers
363 views

Does Brønsted-Lowry theory apply to neutralization reactions?

Does the Brønsted-Lowry theory apply to neutralization reactions such as: $$\ce{HCl + NaOH -> H2O + NaCl}$$ and would there be a conjugate acid/base?
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49 views

How to tell 'orthokinetic' apart from 'perikinetic' based on their prefixes?

During a test in colloid and surface chemistry, students were asked to distinguish between two terms: orthokinetic and perikinetic coagulation. The rate of aggregation is in general determined by ...
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375 views

Is it a “Bary center” or a “Bari center”?

(Studying Coordination Chemistry, "Crystal Field Theory" at school) Apparently, different sources spell this differently. The Wikipedia article on Crystal Field Stabilization Energy, calls it the "...
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2answers
1k views

Etymology of saturation degrees (-ane, -ene, -yne) in aliphatic compounds

I like to know where the names for saturated, unsaturated double, and unsaturated triple bonded aliphatic compounds came from. What is the reason/etymology behind the suffix -ane, -ene, and -yne? I ...
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1answer
63 views

Is lanthanum a lanthanoid? [duplicate]

Is lanthanum classified as lanthanoids? If yes, then can somebody explain in detail why La has 6s2 5d1 as its electron configuration and Ce has 6s2 4f1 5d1?
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2answers
60 views

Atomic mass number and mass number in atomic symbol

In chemistry classes or even many different branches of chemistry textbooks, I am told that the atomic symbol $$\Large ^A_Z\ce{X}$$ includes the following notations: $A$ – "atomic mass" or "mass ...
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1answer
61 views

Is this definition of the verb oxidize correct? [closed]

UPDATED VERSION: There are a dozen definitions of the verb oxidize in various dictionaries. My question is whether the definition in the end of this post holds true. I have added the words in bold. ...
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1answer
632 views

What is the relation between ionization energy and electropositivity?

Electropositivity of an element is defined as a measure of element's ability to donate electrons while Ionization energy or Ionization potential is defined as the energy required to dispel a loosely ...
5
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1answer
88 views

Amount of substance expressed in yoctomole units

I stumbled upon a couple of papers where amounts were expressed in yoctomoles ([ymol], $\pu{10^{-24} mol}$) and I find it somewhat bothersome as 1 ymol would correspond to about 60% of atom/molecule/...
10
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1answer
248 views

What are the differences between the Hilbert space and real space representations in chemistry?

I would like to understand the difference between Hilbert space and real space in a molecular code. My understanding is that the Hilbert space of a system (such as a molecule) can be represented by a ...
0
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1answer
58 views

What is nanoporous structure? [closed]

I would be very grateful if you help me to understand what is nanoporous structure. Does this term relate only to the nanoporous materials (as I understand, materials with regular porous structure) or ...
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1answer
214 views

Zwitterion form of aminoacids

What I am wondering, are aspartic acid and glutamic acid at physiological pH present in zwitterion form. In my textbook it says that all aminoacids are at pH 7,4 or 7 in zwitterion form. I wonder how ...
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1answer
1k views

What is the difference between an analytical standard and a certified reference material?

I am analysing the analytical standard market, but every time I try to understand what an analytical standard is, I only get the definition of a certified reference material. Is there a difference?
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2answers
640 views

What is “chemical pressure”?

While reading some publications on solid superconductors, I encountered a term "chemical pressure" a few times, which is usually attributed to the changes of superconducting transition temperature $T_\...
5
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2answers
7k views

Normal phase vs reverse phase HPLC

What is the difference between normal phase and reverse phase high-performance liquid chromatography?
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2answers
156 views

Definition of an intensive variable

The IUPAC definition of an intensive variable is: Physical quantity whose magnitude is independent of the extent of the system. Why is it defined for "a system", and not for a homogenous system, ...
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0answers
41 views

Basic compound pronunciation help

I am sorry for such a trivial question. Can someone tell me in English how to say the following: $$\ce{ ^{238}U^{16}O, ^{238}U^{18}O, ^{16}O_{2}} $$