Qualitative Predictions about Entropy - CopyEntropy 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 itsentropy.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 themoment 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 AFor the following samples given below, consider the quantity of molecules (moles), the size of the molecule, the temperature of the sample, the occupied space (volume), and the state (gas or liq) when deciding which samples have a greater or lesser degreee ofentrropy.Rank these systems in order of decreasing entropy.Rank from highest to lowest entropy. To rank items as equivalent, overlap them.▸ View Available Hint(s)1/2 mol ofhelium gas at100 K and 20 LGreatest entropy1 mol ofhydrogen gas at273 K and 40 LThe correct ranking cannot be determined.1/2 mol ofhelium gas at273 K and 20 L1 mol ofhelium gas at273 K and 20 L1 mol ofhelium gas at273 K and 40 L1/2 mol ofliquid heliumat 100 K6 of 41 >Reset HelpReview | Constants Periodic Table1 mol ofmethane gas at273 K and 40 LLeast entropy

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Part A Rank these systems in order of decreasing entropy. Rank from highest to lowest entropy. To rank items as equivalent, overlap them. ▸ View Available Hint(s) 1/2 mol of helium gas at 100 K and 20 L Greatest entropy 1 mol of hydrogen gas at 273 K and 40 L The correct ranking cannot be determined. 1/2 mol of helium gas at 273 K and 20 L 1 mol of helium gas at 273 K and 20 L 1 mol of helium gas at 273 K and 40 L 1/2 mol of liquid helium at 100 K Reset Help 1 mol of methane gas at 273 K and 40 L Least entropy

Part A Rank these systems in order of decreasing entropy. Rank from highest to lowest entropy. To rank items as equivalent, overlap them. ▸ View Available Hint(s) 1/2 mol of helium gas at 100 K and 20 L Greatest entropy 1 mol of hydrogen gas at 273 K and 40 L The correct ranking cannot be determined. 1/2 mol of helium gas at 273 K and 20 L 1 mol of helium gas at 273 K and 20 L 1 mol of helium gas at 273 K and 40 L 1/2 mol of liquid helium at 100 K Reset Help 1 mol of methane gas at 273 K and 40 L Least entropy

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Hi please help me with my homework thank you For each scenario, identify if the entropy change of the process is positive or negative.
10.
At 363 K, one state is twice as likely as the other. The first (more likely) state has an energy of 9.19 kcal/mol and an entropy of 0.915 kcal/mol-K. The other state has an energy of 2.19 kcal/mol more then the first state. What is the entropy of the second (less likely) state?
For each of the following changes, do you expect the entropy to increase or decrease? (These questions do not require calculations.) a. Ammonia gas and hydrogen chloride gas react to deposit solid ammonium chloride on a surface b. Two aqueous solutions are combined to form a precipitate c. Methanol gas condenses to form liquid methanol d. Butane liquid reacts with oxygen gas to form carbon dioxide gas and gaseous water e. Liquid water freezes to form ice f. Solid lead melts g. A solid solute dissolves in a liquid solvent h. Liquid water boils Possible answers: 1. Entropy should increase (more positive) 2. Entropy should decrease (more negative) 3. The change in entropy cannot be determined from the information given
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At 0.9 bar of pressure and 373.15 K, the hypothetical transition from liquid to gaseous water will result in what change in the total entropy of the “universe”? No change An increase in the total entropy A decrease in the total entropy Not enough information to determine
Indicate which substance in the given pairs has the higher entropy value. Explain your choices. a. C₂H5OH ( or C3H7OH (1) b. C₂H5OH (1) or C₂H5OH (g) c. 2H (g) or H (g)
Which species do you expect to have the highest molar entropy? a. CH2Cl2 (g) b. NH3 (g) c. N2O5 (s) d. N2H4 (l)