A System Delivers 225 J of Heat to the Surroundings

question 30

Multiple Choice

A system delivers 225 J of heat to the surroundings while delivering 645 J of work. Calculate the change in the internal energy, ΔE, of the system.

• A)−420 J
• B)420 J
• C)−870 J
• D)870 J
• E)−225 J

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Definitions:

Social-Cognitive Learning Theory

A theory that posits that people learn new behaviors and information by observing others, incorporating the concepts of observational learning, imitation, and modeling.

Observable Acts

Actions or behaviors that can be seen or measured directly.

Mental Events

Internal occurrences in the mind, such as thoughts, feelings, and perceptions, that can influence behavior.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually triggers a conditioned response.