What are Scalar & Vector Quantities? A?scalar?is a?quantity?which?only?has a magnitude (size) A?vector?is a quantity which has?both?a magnitude and a direction For example, if a person goes on ...
Homogeneity of Physical Equations An important skill is to be able to check the?homogeneity?of physical equations using the SI base units The units on either side of the equation should be the same...
SI Base Quantities There is a seemingly endless number of units in Physics These can all be reduced to six base units from which every other unit can be derived These seven units are referred to as...
What is a Physical Quantity? Speed and velocity are examples of physical quantities; both can be measured All physical quantities consist of a numerical magnitude and a unit In physics, every lette...
Deuterated Solvents in Proton NMR When samples are analysed through NMR spectroscopy, they must be dissolved in a solvent Tetramethylsilane (TMS) is a commonly used solvent in NMR Despite TMS showi...
Use of Tetramethylsilane (TMS) In NMR spectroscopy, Tetrametylsilane (TMS) is used as a reference compound The organic compound is dissolved in TMS before being introduced to the magnetic field of ...
Interpreting & Explaining Proton (<sup>1</sup>H) NMR Spectra Nuclear Magnetic Resonance (NMR)?spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usuall...
Interpreting & Explaining Carbon-13 NMR Spectra Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usually show signals on NMR For...
Interpreting Rf Values in GL Chromatography Features of a gas-liquid chromatogram Peaks represent different molecules from the sample - each roughly taking the shape of a triangle The area under ea...
