**Category:** Organic Chemistry  
**Subtype:** Chemical Reactions, Stoichiometry  
**Problem Description:** The problem involves a mixture of fatty acids and triglycerides, specifically the combustion of a mixture containing palmitic acid, oleic acid, and triglyceride Y. It requires calculating the mass of triglyceride Y in the mixture based on the products of combustion (carbon dioxide and water) and the reaction with sodium hydroxide, which produces glycerol and salts. The goal is to find the mass of Y in the total mass \(m\) of the mixture X.