• What is Ar (r being subscript)?
• What is Mr (r being subscript)?
• What is the difference between Ar and Mr (with lowercase r being subscript)?
• How to conduct water displacement with gases that are slightly soluble in water?
• What is an Rf value?
• How do we determine the solubility of substances if they are colourless on a chromatography paper?
• What is the purpose of ninhydrin?