The figure below shows a gas chromatogram of a complex mixture of organic molecules.

a)How many components were found in the mixture?

b)

i. Explain what the term Retention Time means. (1 mark)

ii. Which component has the lowest affinity for the stationary phase? Explain your answer. (2 marks)

iii. Which of the components was present in the largest concentration in the mixture? Briefly explain your answer. (2 marks)