Bohr's Atomic Model
Bohr's atomic theory was prosed by Neils Bohr in 1913. It was the first to inaugurate the quantum theory in the atom.
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Mass concentration is a volumetric measure like molarity. It is the ratio of the mass of a solute to the volume of solution.
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Molality is a concentration that tells how much a solute is present per kg of the solvent.
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