A mixture of a gas consists of 2 moles of oxygen and 4 moles of argon at the temperature 27^@C. Find the total internal energy of the system(Neglect all vibrational modes)

A mixture of a gas consists of 2 moles of oxygen and 4 moles of argon

1.	A mixture of a gas consists of 2 moles of oxygen and 4 moles of argon at the temperature 27^@C. Find the total internal energy of the system(Neglect all vibrational modes)
Answer» SOLUTION :OXYGEN is DIATOMIC and ARGON is monatomic. Total internal energy U = `U_O + U_(Ar) = 2xx5/2 RT + 4xx3/2 RT = 11RT = 11xx8.31xx300` = 27423J.