How Much Energy Is Required to Convert 2 $\degree$ C to Gas at 25

question 150

Multiple Choice

How much energy is required to convert 2.785 moles of liquid ammonia at -50.00 $\degree$ C to gas at 25.00 $\degree$ C? [c_p(liquid) = 80.80 J/(mol . $\degree$ C) ; c_p(gas) = 35.06 J/(mol . $\degree$ C) ; $\Delta$ H_vap =23.35 kJ/mol at the normal boiling point of -33.34 $\degree$ C]

• A)74.48 kJ
• B)38.11 kJ
• C)14.76 kJ
• D)24.20 kJ
• E)69.84 kJ

---

Definitions:

Social Change

The transformation of culture, behavior, social institutions, and social structure over time, often seen as a necessary aspect of societal progress or development.

Emergent Norm Theory

A sociological hypothesis that posits individuals in a crowd behave not out of pre-existing norms, but from norms that emerge and are accepted within the crowd during the event.

Contagion Theory

A theory in social psychology that suggests ideas, attitudes, and emotions spread through a population like a contagious disease, influencing group behavior.

Convergence Theory

A theory suggesting that as societies develop, they begin to resemble each other more by adopting similar technologies and social structures.