9701/121 markMay/June 2025 · Question 4022.2 Mass spectrometry22.2 Mass spectrometryQuestionAnswer⚑ Report a problem1 partOpen full size ↗
9701/225 marksMay/June 2025 · Question 52.4 Reacting masses and volumes, 22.1 Infrared spectroscopy2.4 Reacting masses and volumes22.1 Infrared spectroscopyQuestionMark schemeSide by side (experimental)⚑ Report a problem4 partsOpen full size ↗