A gas is allowed to expand in a well insulated container against a constant external pressure of from an initial volume of to a final volume of . The change in internal energy of the gas in joules

Question

A gas is allowed to expand in a well insulated container against a constant external pressure of  from an initial volume of  to a final volume of . The change in internal energy  of the gas in joules will be :

Canvas Classes · Accepted Answer

🧠 The Insulated Expansion
When a gas expands in a "well-insulated" container, it's having a private conversation with the external world—no heat can get in or out. This is an Adiabatic process (). All the energy for the expansion work must come from the gas's own "savings" (internal energy).

🗺️ The Thermodynamic Math
1. Process: .
2. First Law: .
3. Work Calculation: 
   - External Pressure () .
   - Change in Volume () .
   - .
4. Units Conversion: 
   - .
   - .
5. Matching: The closest val

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