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A flask was weighed dry and then filled with water. If the masses of the empty flask and filled flask were 56.12 g and 87.39 g, respectively, and the density of water is 0.9976 g/cm3, how would you calculate the volume of the flask in cubic centimeter?

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Cyrielle Lorio
Cyrielle LorioLv10
12 Nov 2020

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Related questions



A certain volatile hydrocarbon (a binary compound of carbon and hydrogen) is found to be 92.3% carbon by mass. In a seperate experiment, utilizing the Dumas method, a 4.00 mL pure liquid sample of this hydrocarbon is vaporized in a 125 mL Florence flask when the barometric pressure is 768.0 torr. After the exess gas escapes the temperature is measures as 98.0 C. The flask and contents are subsequenlty cooled to 25 C (densitry water at 25 C = 0.997044 g/mL ) and the vapor condenses to a liquid. The flask is then empetied cleaned and filled with water. When weighed on the balance, the difference in weight between the flask filled to the brim with water and the dry empty flask at 25 C is 128.12 g

The empty flask - fitted with a foil cap pierced with a pinhole - weighs 25.3478g

The weight of the flask and contents is found to be 25.6803g

Determine the Emperical formula, the volume that the vapor occupied in the Florence flask and the molecular formula of this hydrocarbon.

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