New answers tagged

0

https://youtu.be/l9v1K5jF_C0 Check out this link. This should give you a good idea of what a lagged bath is. But for clarification sake it is also a dewar. A insulated vessel that prolongs the transfer of heat from one medium to another during a reaction as you can see from the clip. Hope this helps.


17

Herzberg filtration speed: The time taken to filter $\pu{100 mL}$ water at $\pu{20 ^\circ C}$ through a filter area of $\pu{10 cm2}$ at a constant pressure of $\pu{5 cm}$ water column (Thomas Scientific). The values are given in seconds. So, the example OP has given has Herzberg filtration speed of $\pu{375 s}$. That means the relevant filter paper takes $\...


2

Relative Atomic Mass vs Atomic Weight Relative Atomic mass ($m_a$) is the measurement of the mass of an atom relative to carbon-12. It's dimension is M.[1] It can be measured in Da/u, kg or g.* [3] $$m_a \approx \mathrm{Mass\ Number} \times {1\ \mathrm{u}}$$ except for carbon-12 where they are the same. Atomic weight is: Relative atomic mass vs Standard ...


2

If you are confused, it is not a surprise because chemists remained confused for 200 hundred years. Welcome to the world of real science. Atomic weight is the older term for atomic mass. Modern day hair splitters would say that mass and weight are different things but historically in the old chemical literature, they meant one and the same thing. Nobody can ...


4

Double titration also often refers to Gilson's titration method (also known as "Gilman color tests" or "Gilman double titration") for determining the concentration of organometallic compounds in hydrocarbon solvents. At the first stage the total concentration of the base in the solution is determined. At the second stage the residual ...


4

Sometimes authors use buzz words in their paper in order to make their work novel or fancier than it should be. However, such newly coined terms never get popular and vanish with the author into oblivion. No, cis and trans can never mean cathode or anode. It refers to the chambers in which the electrode is place. I looked up the Oxford's Latin Dictionary: ...


15

This is an example of terminology which should be taken with a grain of salt. The term "effective nuclear charge" is often casually symbolized with $Z_\mathrm{eff}.$ This is a universally accepted simplification, but you should keep in mind that the effective nuclear charge is, strictly speaking, $Z_\mathrm{eff}e,$ where $e$ is the elementary ...


1

The term "unit" probably means the size of the isolation window used in the QQQ. The term "unit" means the nominal isolation window is 1 Da (i.e. one mass "unit") wide. The "resolution" is a standard term in mass spectrometry, and here they are saying it is about 1 Da.


Top 50 recent answers are included