Hello!
The mass of Sulfur Hexafluoride SF₆ that has the same number of fluorine atoms as 25 g of Oxygen Difluoride OF₂ is 22,52 g
Explanation:
The number of fluorine atoms in 25 g of Oxygen Difluoride is given by:
[tex] 25 g OF_{2}*\frac{1 mol OF_2}{53,9962 g OF_2}*\frac{2 mol F}{1 mol OF_2}*\frac{6,02*10^{23} atomsF}{1 mol F}\\=2,79*10^{29} atoms F [/tex]
Now, from this number of atoms in 25 g of Oxygen Difluoride we get the mass of Sulfur Hexafluoride SF₆
[tex] 5,57*10^{23} atoms F*\frac{1 mol F}{6,02*10^{23} atoms F}*\frac{1 mol SF_6}{6 mol F}*\frac{146,06 g SF_6}{1 mol SF_6}\\ = 22,52 g SF_6 [/tex]
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