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Question about Expansion: Liquids in Containers

Physics

Originais Teachy

Expansion: Liquids in Containers

Medium

(Originais Teachy 2023) - Question Medium of Physics

A chemical analysis laboratory has a 500 mL glass graduated flask with a flammable liquid at 20°C. In order to prevent flammable liquids from being exposed in the laboratory, the technician chooses to store the liquid in a steel flask. The volumetric expansion rates (expansion coefficient) of the liquid, glass, and steel are, respectively, 1000x10⁻⁶ ºC⁻¹, 20x10⁻⁶ ºC⁻¹, and 40x10⁻⁶ ºC⁻¹. In order for this liquid to be stored properly, it is important for the technician to know what the volume of the liquid and the steel flask will be when they reach the same equilibrium temperature. a) Considering that the temperature of the place where the liquid will be stored is 30°C, calculate the volumetric expansion of the liquid when it reaches this temperature and determine the total volume of the liquid in this condition. b) Calculate the volumetric expansion and the final volume of the glass flask when it reaches 30°C. c) If the steel flask has a capacity of 600 mL at 20°C, check if it will be suitable to completely store the liquid (consider the equilibrium temperature of 30°C).

Answer sheet:

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