Use the Following to Answer the Question:
-The Internal $\circ$

question 71

Multiple Choice

Use the following to answer the question:
-The internal energy for a diatomic gas is given by U = 5nRT/2.Calculate the internal energy of a 100 g mixture of oxygen (20%) and nitrogen (80%) gas at 25 ^$\circ$ C.(The molar weight of O₂ = 32 g,and the molar weight of N₂ = 28 g.)

• A)21.6 kJ
• B)1.80 kJ
• C)12.1 kJ
• D)13.0 kJ
• E)1.10 kJ

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