A System Initially Has an Internal Energy U of 504

question 42

Multiple Choice

A system initially has an internal energy U of 504 J. It undergoes a process during which it releases 111 J of heat energy to the surroundings, and does work of 222 J. What is the final energy of the system, in J?

• A) 171 J
• B) 393 J
• C) 504 J
• D) 615 J
• E) 837 J

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Definitions:

Euphotic Zone

The layer of the ocean where sunlight is sufficient for photosynthesis, supporting a majority of marine life.

Ecological Service

Benefits to humans provided by natural ecosystems, including pollination, water purification, climate regulation, and nutrient cycling.

Freshwater Systems

Natural bodies of water that have low salt concentrations, such as rivers, lakes, streams, and underground aquifers, crucial for drinking water, agriculture, and habitats.

Nutrient Cycling

The movement and exchange of organic and inorganic matter back into the production of living matter, recycling elements and nutrients through the biosphere.