1. A. Briefly explain why hydrogen atoms in methane are all in equivalent positions? B. Briefly explain why there are no structural isomers of propane (c3h8) C. Briefly explain how geometric isomerism differs from structural isomerism in carbon compounds? 2. Use the structural formulas to explain how the other two structural isomers of C5H12 differ: a. from n-pentane b. from each other 3. Use the structural formulas to explain how the other structural isomers of C6H14 differ: a. from n pentane b. from each other