Respuesta :

Neetoo

Answer:

Number of moles = 0.01 mol

Explanation:

Given data:

Mass of sulfur trioxide = 0.762 g

Moles of sulfur trioxide = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of sulfur trioxide = 80 g/mol

Now we put the values in formula.

Number of moles = mass/ molar mass

Number of moles = 0.762 g / 80 g/mol

Number of moles = 0.01 mol