Cinnamaldehyde (132

question 22

Multiple Choice

Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent. What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.57°C? (For ethanol, K_b = 1.22°C/m; boiling point of pure ethanol = 78.37°C)

• A) 62.4 g
• B) 67.8 g
• C) 76.2 g
• D) 78.5 g
• E) 79.6 g

Describe temperament and its implications for personality development from infancy.

Identify the influence of early temperamental traits on later behavior and psychological characteristics.

Understand the contributions of both genetics and environment to the development of temperament.

Comprehend the development phases of a human from conception through the prenatal period.