Problem 2: A gas mixture consists of 120 mg of methane, 200 mg of argon, and...

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Problem 2: A gas mixture consists of 120 mg of methane, 200 mg of argon, and 225 mg of neon. The partial pressure of neon at 300 K is 9.50 kPa. Assume all gases are perfect. a. Calculate the volume (in L) b. Calculate the total pressure of the mixture (in kPa). Problem 3: 3.00 mol of a prefect gas goes through an isothermal expansion at 0.00 C from 5.00 dm to 15.0 dm. Calculate q, w, and AU for three scenarios: a. Reversible expansion. b. Expansion against a constant external pressure that is the same as the final pressure of the gas. c. Free expansion (no external pressure, P, external = 0) Problem 2: A gas mixture consists of 120 mg of methane, 200 mg of argon, and 225 mg of neon. The partial pressure of neon at 300 K is 9.50 kPa. Assume all gases are perfect. a. Calculate the volume (in L) b. Calculate the total pressure of the mixture (in kPa). Problem 3: 3.00 mol of a prefect gas goes through an isothermal expansion at 0.00 C from 5.00 dm to 15.0 dm. Calculate q, w, and AU for three scenarios: a. Reversible expansion. b. Expansion against a constant external pressure that is the same as the final pressure of the gas. c. Free expansion (no external pressure, P, external = 0)