SKE 220 is the second-year continuation of the engineering chemistry sequence — by this point the module assumes real fluency with the SKE 110/120 foundations and moves into more specialised applied content.
Students booking SKE 220 help are usually not struggling with chemistry broadly — it's a specific section or problem type that's the actual blocker, which is exactly what a targeted tutor session is good for.
No dedicated SKE 220 materials package exists yet — sessions are booked directly with a tutor and tailored to the specific section or upcoming test.