The freezing point of a solution prepared by dissolving 127.3 mg of caffeine in 10.0 g of camphor is lower than that of pure camphor (Kf = 39.7°C/m) by 2.61°C. What is the molar mass of caffeine?   Elemental analysis of caffeine yields the following results: 49.49% C, 5.15% H, 28.87% N, and the remainder O. What is the molecular formula of caffeine? List the elements in the order given by the elemental analysis.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.