Questions tagged [notation]
A system of written symbols used to represent qualities or quantities, elements or molecules, or formulas in general. Usually a notation follows a convention or a guideline, often published by IUPAC-IUPAP. This tag should be used for questions regarding the proper use of a notation or misleading or uncommon notation in the scientific literature. Do not confuse this tag with the [nomenclature] or [terminology] tags.
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Question on notation
Here, when they write $v/(\mathrm{mol\ s^{-1}\ (kg\ \text{protein})^{-1}})$ is $0.30$ for the first row first column, do they mean that the value is $0.30\ \mathrm{mol\ s^{-1}\ (kg\ \text{protein})^{-...
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Why do we write electrode potentials next to chemical reactions? [closed]
We might have a half cell consisting of the redox couple $\ce{Ag+}/\ce{Ag}$, which for example's sake might be fixed to be at the cathode (i.e. undergoing reduction).
The reaction at the cathode is ...
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What does (sol) in a chemical equation mean?
I'm reading Shrivers Inorganic Chemistry book and some of the equations have a (sol) state on them. I'm sure the book has already defined this but I cannot find where.
Examples:
\begin{align}
\ce{[...
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Formating a chemical equation - Physical states
I study chemistry in an University and I have two professors that says opposing things. One says that the physical state must be subscribed (1 at the picture) and other that it must be written to the ...
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What is the @ symbol used for in material science?
I came across the phrase "Silicone Rubber/Paraffin@Silicon Dioxide" also written as $\ce{SR/pa@SiO2}$, utilising the @ symbol.
How can I understand what this means?...
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Has anyone encountered the use of Omega to represent equilibrium?
One of my lecturers last year (a pharmacologist by training) used the symbol $\Omega ^m$ as a shorthand for equilibrium. He implied it was common practice but I've never come across it elsewhere. I ...
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Is there a standardized way to assign a label to the symbol of a chemical element (in a published work)?
When referring to a particular atom, both in text and when using a graphical representation, several conventions are being applied.
In the field of crystallography an arabic numeral either follows ...
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An exception to the IUPAC convention for italicisation (typography)
According to IUPAC, only physical quantities and variables must be italicised.
Section 8 Use of Italic and Roman Fonts for Symbols in Scientific Text of ICTNS Guidelines for Drafting IUPAC Technical ...
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Confused on how to draw cis-[Ni(H2O)4(NH3)2]Cl2 [closed]
I got a question on my practice exam telling me to draw cis-diamminetetraaquanickel(II) chloride, but I'm not sure on how to place the two $\ce{Cl}$ atoms.
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Meaning of mass concentration "units" % m/v [closed]
In a saline solution that is 5.750% (m/v) potassium iodide $(\ce{KI}),$ there are:
a) 5.750 mL $\ce{KI}$ per 100.0 mL $\ce{H2O}$
b) 575.0 mg $\ce{KI}$ per 10.00 mL of $\ce{KI}$ solution
c) 5.750 g $\...
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Why do we use [H⁺] and [OH⁻] in balancing redox reactions instead of using [H₃O⁺] and [OH⁻]? [duplicate]
For what reason is it universally agreed upon that we use $$\ce{H+ + OH-}$$ ions in balancing water on either side of the reaction, but not the $$\ce{H3O+}$$ ions?
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“T” in subscript in formulas
Does a “T” in a formula subscript indicate all possible numbers of atoms? $\ce{FeO_T}$ is the specific one I came across (in the "bulk chemistry" table here: https://sciences.ucf.edu/class/...
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What does a comma signify in inorganic chemistry?
$\ce{(Ca{,}Co)CO3}$
I have never ever seen this before. What does this mean exactly?
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How to distinguish mass concentration and density?
I am writing a proof where I have to mention both with density and of a material and mass concentration (mass/volume) of a material.
I am using the letter $\rho$ to represent density, and I didn't ...
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What does "lit." mean in boiling point or melting point specification?
For example, this Xanthene 99% specification from Sigma Aldrich states:
\begin{array} \\\hline
\text{bp} & 310-312 ~^\circ\mathrm{C~ (lit.)} \\\hline
\text{mp} & 101-102 ~^\circ\mathrm{C~ (...
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