What is the change in entropy when 0.145 mol of potassium freezes at 61.4°C (ΔHfus = 2.39 kJ/mol)?
_______________J/K
What is the change in entropy when 0.145 mol of potassium freezes at 61.4°C (ΔHfus =...
What is the change in entropy for the fusion of 2.5 mol of mercury at 234 K? (ΔHfus (Hg) = 23 kJ /mol)
Calculate the change in entropy that occurs in the system when 49.0 g of acetone (C3H6O) freezes at its melting point (-94.8∘C). ΔH∘fus = 5.69 kJ/mol. Answer in J/K
What is the entropy change of the universe (in J K-1)when 2.00 mol of liquid water at 0 °C freezes in a freezer compartment whose temperature is -15 °C? Assume the freezer is a perfect insulator. (AHfus = 6.01 kJ mol-1 for water) Select one: O a. +90.6 O b. +46.6 C. -2.6 O d. -44.0 o e. +2.6
What is the change in entropy of 0.97 mol of liquid water at 0.0 degree C that freezes to ice at 0.0 degree C? J/K
1. What is the change in entropy of 92.9 g of neon gas when it undergoes isothermal contraction from 20.1 L to 13.3 L? Assume ideal gas behavior. Enter a number to 2 decimal places. 2. Calculate the change in entropy in J/K for the melting of 12.0 g of ice at 0.0°C (ΔHfus = 6.02 kJ/mol). Enter a number to 2 decimals. 3. Calculate the entropy change when a 687 g sample of mercury is heated from 26°C to...
What is the entropy change to the surroundings when 1 mol of ice melts in someone's hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. -188 J/K b. -22.0 J/K c. -19.7 J/K d. +19.7 J/K e. +188 J/K
The heat of vaporization of CH_2CI_2 is 28.0 kJ/mol. Calculate the entropy the entropy change when 42 g of CH_2CI_2 boils at its boiling point of 39.8degreeC. 17 J/K 44J/K 59J/K 350J/K 700J/K
The heat of fusion AH, of ethanol (CH3CH,OH) is 4.6 kJ/mol. Calculate the change in entropy AS when 563. g of ethanol freezes at -114.3 °C Be sure your answer contains a unit symbol. Round your answer to 2 significant digits. to . ? X
What is the entropy change in the surroundings when one mole of ice melts at 0.00'C in a large room maintained at 27.0°C? The heat of fusion of ice is 6.31 kJ/mol (answer in 1/K) Answer: 21.0 Check Finis
Calculate the change in entropy that occurs when 18.02 g of ice at –17.5°C is placed in 90.08 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K^-1 mol^-1 and 75.3 J K^-1 mol^-1, respectively, and the molar enthalpy of fusion for ice is 6.01 kJ/mol. Change in entropy = ______J/K