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# Thermodynamics Questions - All Grades

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The First Law of Thermodynamics helps you to understand the
1. conservation of entropy.
2. conservation of energy.
3. perpetual motion.
4. enthalpy.
The Kinetic Molecular Theory of gases states that many particles (i.e., atoms or molecules) are
1. at rest.
2. in constant random motion.
3. in thermodynamic equilibrium.
4. in static equilibrium.
The Kinetic Molecular Theory states that the pressure of a gas results from
1. the mass of particles.
2. the collisions of particles with the walls of a container.
3. the forces of repulsion between the particles.
4. the energy loss experienced by each particle.
According to second law of thermodynamics, heat energy cannot be completely converted into useful work owing to
1. the entropy of the system.
2. the enthalpy of the system.
3. the internal energy of the system.
4. the translational energy of the system.
Which of the following reflects a correct assumption of the Kinetic Molecular Theory?
1. There are constant forces of attraction between the molecules.
2. There are constant forces of repulsion between the molecules.
3. There are constant forces of attraction and repulsion between the molecules.
4. There are no attractive or repulsive forces between the molecules.
Which of the following equations is used to represent the First Law of Thermodynamics for a closed system, according to the IUPAC convention?
1. $DeltaU=Q+W$
2. $DeltaU=W-Q$
3. $DeltaU=Q-W$
4. $DeltaU=Q+2W$