A certain volatile hydrocarbon (a binary compound of carbon and hydrogen) is found to be 92.3%...

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Chemistry

A certain volatile hydrocarbon (a binary compound of carbon andhydrogen) is found to be 92.3% carbon by mass. In a seperateexperiment, utilizing the Dumas method, a 4.00 mL pure liquidsample of this hydrocarbon is vaporized in a 125 mL Florence flaskwhen the barometric pressure is 768.0 torr. After the exess gasescapes the temperature is measures as 98.0 C. The flask andcontents are subsequenlty cooled to 25 C (densitry water at 25 C =0.997044 g/mL ) and the vapor condenses to a liquid. The flask isthen empetied cleaned and filled with water. When weighed on thebalance, the difference in weight between the flask filled to thebrim 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 vaporoccupied in the Florence flask and the molecular formula of thishydrocarbon.

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Mass of flask foil 253478 g Mass of flask foil contents 256803 g Therefore mass of the hydrocarbon 256803 253478 g 03325 g Also it is given that mass of water in the flask 12812 g Density of water at 25C 0997044 gmL Therefore volume of water in the flask volume occupied by the vapour of the hydrocarbon mass of waterdensity See Answer

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