Two moles of an ideal gas are expanded isothermally from a volume of 15.5 L to the volume of 20 L against a constant external pressure of 1 atm. Determine the amount of work in L a... Two moles of an ideal gas are expanded isothermally from a volume of 15.5 L to the volume of 20 L against a constant external pressure of 1 atm. Determine the amount of work in L atm and J.
Understand the Problem
The question is asking about the behavior of gases during expansion under constant external pressure and requires calculating the work done in two different units (L atm and J).
Answer
-4.5 L atm or -456 J
The amount of work done is -4.5 L atm or -456 J.
Answer for screen readers
The amount of work done is -4.5 L atm or -456 J.
More Information
The work done is negative because the gas is expanding against the external pressure, which means the system is doing work on the surroundings.
Tips
A common mistake is to forget to convert the units from L atm to Joules when required.
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