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 19.00 u,respectively.What mass does one mole of this gas have?
A)32.0 g
B)51.0 g
C)146 g
D)608 g

Question

Quizplus · Accepted Answer

The molecular mass of SF6 can be calculated as follows:

Molecular mass of SF6 = (1 x atomic mass of S) + (6 x atomic mass of F)
= (1 x 32.0 u) + (6 x 19.0 u)
= 32.0 u + 114.0 u
= 146.0 u

One mole of SF6 would have a mass equal to its molecular mass in grams. Therefore, one mole of SF6 would have a mass of 146.0 g. Hence, the correct answer is C) 146 g.

The Sulfur Hexafluoride Molecule Consists of One Sulfur Atom and Six