Question

Determine the mass of the sample

Answer 1

We know that 1 kmol = 1000 mol, so 2.43 kmol = 2430 mol.

• The atomic mass of sulfur is 32.06 amu.
• The atomic mass of oxygen is 15.9994 amu.

This means the formula mass of sulfur trioxide is

`32.06+3(15.9994)=80.0582 \text{ g/mol}`

Therefore, the mass is

`(80.0582)(2430)=\boxed{1.95 * 10^(5) \text{ g (to 3 sf)}}`