Calculate the number of moles in 128 g of sulphur dioxide.

Number of moles = 2 mol

Explanation:

Given dа ta:

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