Answer:
Number of moles = 2 mol
Explanation:
Given data:
Mass of sulphur dioxide = 128 g
Number of moles = ?
Solution:
Formula:
Number of moles = mass/ molar mass
Molar mass of sulphur dioxide:
Formula = SO₂
Atomic weight of sulfur = 32.065 amu
Atomic mass of oxygen = 16 amu
SO₂ = 32.065 + 16×2 = 64.065 g/mol
Number of moles = 128 g/ 64.065 g/mol
Number of moles = 2 mol
