Entropy is the randomness of a system. at the molecular level, entropy can be described in terms of the possible number of different arrangements of particle positions and energies, called microstates. the more microstates the system has, the greater its entropy. microstates depend on molecular motion. molecules may undergo three different types of motion: translational motion, vibrational motion, and rotational motion. during translational motion, the entire molecule moves in one direction. during vibrational motion, atoms in a molecule move toward and away from one another. during rotational motion, molecules rotate or spin. the number of molecules, the space available for the molecules, and the energy available to the molecules will impact the number of microstates. another way of looking at entropy is that the universe is moving toward a broader distribution of energy. the universe has a constant amount of energy as stated in the first law of thermodynamics. the universe started with low entropy (concentrated in the moment before the "big bang") and the entropy has since been constantly increasing by distributing this energy. heat distribution from high temperature to low temperature is a another example of this phenomenon. part arank these systems in order of decreasing entropy. rank from highest to lowest entropy. to rank items as equivalent, overlap them.1 mol ofhelium gas at273 k and 20 l1/2 mol ofhelium gas at100 k and 20 l1 mol ofcarbon tetrachloride gas at273 k and 40 l1 mol ofchlorine gas at273 k and 40 l1/2 mol ofliquid heliumat 100 k1 mol ofhelium gas at273 k and 40 l1/2 mol ofhelium gas at273 k and 20 lpart bclassify each process by its individual effect on the entropy of the universe, s. drag the appropriate items to their respective bins. a process run infinitesimally slowly at equilibrium and reversed to its original statea constant composition mixture of solid and liquid water at stp (273.15 k and 1 atm)motion of a frictionless penduluma bag of red marbles and a bag of green marbles dumped together on a table topmelting of ice cream from solid to liquid at 25? cisothermal expansion of a real gasincreases s of the universedoes not affect s of the universedecreases s of the universe