Examlex
Which stage of the general adaptation syndrome might explain why college students tend to experience a higher rate of absenteeism from class around midterm and final exam time each semester?
Sigma Complex
An intermediate structure in a chemical reaction where a sigma bond is formed between the electrophile and the nucleophile.
Electrophilic Aromatic Substitution
A reaction where an aromatic ring undergoes substitution by an electrophile, retaining the aromaticity of the compound.
Nitration
A chemical reaction that introduces a nitro group (NO2) into an organic compound, usually involving the substitution of an H atom, often used to synthesize explosives or other nitro compounds.
Anisole
An organic compound consisting of a methoxybenzene group, used as a precursor in the synthesis of other chemicals.
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