The figure shows a pV diagram for 0.0066 mol of gas that undergoes the process 1 → 2 → 3. What is the pressure p2? The ideal gas constant is R = 8.314 J/mol ∙ K = 0.0821 L ∙ atm/mol ∙ K. 
Definitions:
Psychosexual Stages
A Freudian theory describing the stages of a child's development, each characterized by the erogenous zone that is the source of the child's psychosexual energy.
Fixations
Persistent focus on an earlier psychosexual stage due to unresolved conflicts, as per Freudian theory.
Oedipus Complex
A psychoanalytic theory positing children's unconscious desire for the opposite-sex parent and jealousy towards the same-sex parent.
Oral Fixation
A concept in psychoanalytic theory that suggests an obsession with oral activities (eating, talking, smoking) stemming from issues in early development.
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