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first, you need to have a balanced equation. this is S8 + 24F2 = 8SF6

start with your given, which is 17.8g of sulfur

17.8g S8 x 1 mol S8/256.56g S8 (the 256.56 is the molar mass of S8)

this gives you .06938. multiply that by 24 mols F2/1 mol S8. which is 1.67 mols of F2.

1.67 mols F2 x 38.00g F2/1 mol F2. (38.00g F2 is the molar mass of F2)

your answer is 63.2 g F2 :D

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13y ago
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Q: What mass of fluorine gas is needed to react completely with 17.8 g of sulfur to form sulfur hexafluoride?
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