Question

Draw a fatty acid chain that is 8 carbons long and is unsaturated

Answer 1

Fatty acid => hydrocarbon chain + carboxilic group => CnHm-COOH

8 carbons long => C - C - C - C - C - C - C - C - COOH

unsaturated => double bonds

=> CH3-CH=CH-CH2-CH2-CH2-CH2-CH2 - COOH: 8 carbon chain, one double bond, carboxylic group.