The sulfur hexafluoride molecule consists of one sulfur atom and six fluorine atoms.The atomic masses of sulfur and fluorine are 32.0 u and 19.0 u,respectively.One-half mole of this very heavy gas has what mass?
A) 32 g
B) 73 g
C) 146 g
D) 608 g

Question

Quizplus · Accepted Answer

To find the mass of one-half mole of sulfur hexafluoride, we can use the molar mass of the molecule.

Molar mass of SF6 = (1 x 32.0 u) + (6 x 19.0 u) = 146.0 u

Now, we need to find the mass of one-half mole of SF6:

1 mole of SF6 = 146.0 g

1/2 mole of SF6 = (1/2) x 146.0 g = 73.0 g

Therefore, the answer is B) 73 g.

The Sulfur Hexafluoride Molecule Consists of One Sulfur Atom and Six