https://session.masteringchemistry.com/myct/itemView?assignmentProblemiD-7415276

Question

https://session.masteringchemistry.com/myct/itemView?assignmentProblemiD-74152763 CHEM 1220-01 FALL 2016 pter 19 Ada Problem 19.40 Problem 19.40 Indicate whether each statement is true or false. Part A Unlike enthalpy, where we can only ever know changes in H, we can know absolute values of s False. True. Submit My Answers Give Up Part B If you heat a gas such as Ar, you will increase its degrees of translational, rotational and vibrational motions. O True. False. Submit My Answers Give Up Part C CO2(9) and Ar(g) have nearly the same molar mass. At a given temperature, they will have the same number of microstates. False. True. True. Submit My Answers Give Up

Explanation / Answer

Part A False

according to third law of thermodynamics, when the temprature tends towards 0K, the entropy is tending towards minimum.As the temprature can never reach to 0K, so entropy can never be zero, so entropy does not contain absolute value, it is always calculated as entropy change.

Part B True

A degree of freedom is any form of energy in which heat transferred into an object can be stored. This can be in translational kinetic energy, rotational kinetic energy, or other forms such as potential energy in vibrational modes. Only three translational degrees of freedom (corresponding to the three independent directions in space) are available for any individual atom, whether it is free, as a monatomic molecule, or bound into a polyatomic molecule.

Part C False

Both have diferent degree of freedom

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.