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A student following the procedure of the experiment determining the molar mass of a volatile liquid by the dumas method obtaint the following data for an unknown volatile liquid : mass of flask, boiling stone , foil cap, and unknown after cooling , g 83.350.
mass of flask ,

boiling stone. and foil cap , g 82.657.

water bath temperature, *C 95.0.

barometric pressure in HG 30.09

volume of flask mL 270

accepted molar mass of unknown g\mol 86.2

(a) calculate the mass of the unknown

(b) express the water bath trmperature in K

(d)express the volume of the flask in liters

(e)calculate the density of the vaporized unknown

(f) calculate the molar of the vaporized unknown

(g) calculate the percent error in the determination

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Category:- Chemistry
Reference No.:- M9501471

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