josephsamual654
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Sulfur and fluorine react to form sulfur hexafluoride according to the reaction shown here. How many mol of F2 are required to react completely with 2.15 mol of S?

S(s)+3F2(g)→SF6(g)

A. 12.9 molF2
B. 6.45 molF2
C. 0.72 molF2
D. 2.15 molF2

Respuesta :

B. 6.45 mol F2

The mole ratio here is 3 mol F2 for every 1 mol S. Multiply 2.15 mol S by 3 to get the mol of F2 needed.

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