객관식
A gas absorbs 150 J of heat from its surroundings and does 40 J of work on the surroundings. What is the change in internal energy of the system?
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8. Thermochemistry
Internal Energy
객관식
Which of the following represents a state function?
A
the actual distance between two cities
B
the distance traveled between two cities
C
the depth a scuba diver dives
D
both the first and second choices
E
both the first and third choices
F
both the second and third choices
검증된 단계별 안내1
Understand the concept of a state function: A state function is a property whose value does not depend on the path taken to reach that specific value. It depends only on the current state of the system.
Identify examples of state functions: Common examples include temperature, pressure, volume, and enthalpy. These properties are determined by the state of the system, not how the system arrived at that state.
Analyze the given choices: Consider each option and determine if it is a state function. The actual distance between two cities is a fixed value and does not depend on the path taken, making it a state function.
Evaluate the depth a scuba diver dives: The depth is a specific measurement at a given point and does not depend on the path taken to reach that depth, making it a state function.
Conclude which options are state functions: Based on the analysis, both the actual distance between two cities and the depth a scuba diver dives are state functions, as they depend only on the current state and not the path taken.
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