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  2. Structure–activity relationship - Wikipedia

    en.wikipedia.org/wiki/Structure–activity...

    The structure–activity relationship (SAR) is the relationship between the chemical structure of a molecule and its biological activity.This idea was first presented by Alexander Crum Brown and Thomas Richard Fraser at least as early as 1868.

  3. Dalton's law - Wikipedia

    en.wikipedia.org/wiki/Dalton's_law

    An illustration of Dalton's law using the gases of air at sea level. Dalton's law (also called Dalton's law of partial pressures) states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases. [1]

  4. Byju's - Wikipedia

    en.wikipedia.org/wiki/Byju's

    Byju's is an education tutoring app that runs on a freemium model, [30] with free access to content limited for 15 days after the registration. [30] [31] It was launched in August 2015, [32] offering educational content for students from classes 4 to 12. [33]