First Law of Thermodynamics: in an Isochoric Process, the Internal

question 49

Multiple Choice

First law of thermodynamics: In an isochoric process, the internal (thermal) energy of an ideal gas decreases by 50 J. How much heat is exchanged with the gas during this process?

• A) 0.00 J
• B) 25 J
• C) 50 J
• D) -25 J
• E) -50 J

---

Definitions:

Andesite

A volcanic rock of intermediate composition, typically found in volcanic arcs associated with subduction zones, characterized by a medium gray or brown color.

Silica Content

The proportion of silicon dioxide (SiO2) in a rock, mineral, or geological sample, influencing its physical properties and behavior.

Caldera

A vast volcanic depression, usually created when land collapses after a volcanic explosion.

Pyroclastic Flows

Fast-moving current of hot gas and volcanic materials that move away from a volcano during an explosive eruption.