Question

The mass of a sulfur atom is 32.0 u, and the mass of a fluorine atom is 19.0 u. What is the mass of a mole of sulfur hexafluoride (UF.)

Answer 1

Answer: The mass of sulfur hexafluoride is 146 u.

Explanation:

Mass of a mole of a substance is defined as the molar mass of that substance.

It is defined as the sum of every component each multiplied by the times they appear in that substance.

We are given:

Mass of sulfur atom = 32.0 u

Mass of fluorine atom = 19.0 u

The chemical formula for sulfur hexafluoride is $SF_6$

So, the molar mass of $SF_6=[32+(6\times 19)=146u$

Hence, the mass of sulfur hexafluoride is 146 u.