Final answer:
To find the number of SO₂ molecules in 1.75 mol of SO₂, use Avogadro's number. Multiply 1.75 mol by 6.022 x 10^23 molecules/mol to get 1.055 x 10^24 molecules of SO₂.
Step-by-step explanation:
To determine the number of SO₂ molecules in 1.75 mol of SO₂, we can use Avogadro's number. Avogadro's number states that 1 mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.). Therefore, 1.75 mol of SO₂ has:
(1.75 mol) x (6.022 x 10^23 molecules/mol) = 1.055 x 10^24 molecules of SO₂