Hỗn hợp X gồm axit panmitic, axit oleic và triglyxerit Y có tỉ lệ mol 5:1:2. Đốt cháy hoàn toàn m gam X cần 2,955 mol O2 thu được CO2 và H2O. Mặt khác thuỷ phân hoàn toàn m gam X băng NaOH vừa đủ thu được 34,66 gam hỗn hợp 2 muối. Khối lượng của Y trong m gam X là?

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