| Summary: | It should be noted that in recent years, solutions with liquid components have a very wide distribution in the art and are used in many industrial processes, heat exchanging devices. They are also used as the working fluid, fuels, oxidizers, reducing agents, protective devices, cooling and heating media, solvents, propellants, surfactants and other functional substances and materials used in all industries. Therefore, we experimentally investigated the density of sunflower oil depending on the concentration of n-hexane in the temperature range from 293-539,2 and To a pressure 0,101-9.81 MPa. To measure the density of solutions of the sunflower oil + n-hexane used method of hydrostatic weighing and thermal conductivity by a cylindrical bikalorimetr regular thermal regime.
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