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A compunds whose empirical formula is xf3 consists of 65% f by mass. what is the atomic mass of x

Kaitlin Dean

in Physics

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Ashley Howard on September 24, 2018

The empirical formula of the compound is XF3Compound consist of 65% of the Fin 100 g of the compound is not of 65 g of F= 65 / 19 moles of Fluorine = 3.421 molesSo moles of X = 3.421 / 3 = 1.140 molesAnd in 100 g of X consist of 35 gSo the molar mass of X = 35 / 1.140 = 30.71 g = 31 approximately, And is the mass of phosphorusSo the empirical formula of the compound is PX3


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