Question: 36- What are the differences between resins and asphaltenes? Explain these in terms of chemical reactions and structure. 37- How do we classify crude oils?

36- What are the differences between resins and asphaltenes? Explain these in terms of chemical reactions and structure. 37- How do we classify crude oils? Name the physical characteristics we use to determine the value of petroleum liquid. Find out desirable values for each physical characteristic listed. 38- Describe different methods to classify petroleum using chemical properties. Are there standards set for chemical classification similar to those for physical classification

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