Use the Following to Answer the Question

question 27

Multiple Choice

Use the following to answer the question:
-An ideal gas initially at 100ºC and pressure P₁ = 250 kPa occupies a volume V₁ = 4.5 L.It undergoes a quasistatic,isothermal expansion until its pressure is reduced to 150 kPa.How much does the internal energy of the gas change during this process? R = 8.314 J/mol·K = 8.206 L·atm/mol·K.

• A)116 J
• B)320 J
• C)575 J
• D)640 J
• E)The internal energy does not change during this process.

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