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Showing posts from February, 2020

[Music]Vector- Protect the church voem.

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Nigerian rap artist, Vector comes through with a new rap single titled, “ Protect The Church Voem ”. The new single “ Protect The Church Voem ” is lifted from his 4-tracks new project, “ The African Mind ” EP which was released about some hours ago.                              Download

FACTS YOU NEED TO KNOW ABOUT NUCLEAR MAGNETIC RESONANCE

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1. It is concer ned with the magnetic properties of certain nuclei,notably the nucleus of the hydrogen atom. 2. Studying an organic molecule by NMR spectroscopy enables us to record difference in the magnetic properties of the various nuclei present and to deduce in large measure what are the positions of these nuclei within the molecule. 3. We can, for proton NMR, deduce how many different kinds of hydrogen environments that are in the molecule and also which hydrogen atoms are present in neighbouring carbon atoms. 4. It has been found and hat nuclei with even atomic numbers and even mass numbers does not exhibit NMR. e.g Helium -4, Carbon -12 and Oxygen -16.

WHAT YOU NEED TO KNOW ABOUT ADSORPTION OF GASES BY SOLIDS

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The phenomenon of adsorption should not be confused with adsorption which refers to one material passing into the bulk of another. For example, water is adsorbed by a sponge and water vapours are adsorbed by anhydrous calcium chloride. The term Sorption is used which includes both adsorption and absorption like the process where water vapours are adsorbed by silica gel and acetic which is. adsorption or absorption. When solids are allowed to remain in contact with a gas, a film of gas molecules accummulates on the surface. Solid and liquid surfaces, therefore, have a tendency to satisfy their residual forces by attracting onto and retaining on their surfaces, molecules of gases or other substances with which they come in contact. This results in higher concentration of molecules on the surface of a solid or liquid than in the bulk of the medium. This phenomenon is known as ADSORPTION. The substance in which the adsorption takes place is know ADSORBENT and tye substance whic

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