Write the condense structural formula of the following compounds. 1. The alkene 2,7 Undecadiene with the molecular formula C11H20 (Note the number of double/triple bonds present)

2. 8 Nonene with the molecular formula C9H18

3. Write the condense structural formula of 5 Decyne with the molecular formula C10H18

A condensed structural formula is a simple way of representing organic compounds.

The given organic compounds and condensed structural formula is presented below;

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explanation:

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.