Rank the following dienes in order of decreasing heat of hydrogenation,putting the diene with the highest heat of hydrogenation first. 
Definitions:
1840
The year that marks significant global events, including the beginning of the Opium War between Britain and China.
National Identity
A sense of a nation as a cohesive whole, represented by distinctive traditions, culture, language, and politics.
Democratic Political Institutions
Organizations and structures within a democracy that create, implement, and uphold the laws and principles of democratic governance.
1840
The year 1840 marks a period in history known for various global events, but without specific context, it generally represents the time point within the 19th century.
Q1: Give the IUPAC name for the following
Q8: Rank the following compounds in order of
Q22: Markovnikov addition of HBr to CH<sub>3</sub>CH=CH<sub>2</sub> involves
Q25: What is the major organic product of
Q26: What is the major organic product of
Q27: Which of the K<sub>eq</sub> corresponds to the
Q32: Consider the following E2 reaction.What rate equation
Q40: What is the hybridization of the indicated
Q46: What is the IUPAC name for the
Q47: The malonic ester synthesis can be adapted