What is the entropy change of the universe (in J K-1)when 2.00 mol of liquid water...
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
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
Please help with detailed explanation 8) Phase change (homework) Calculate the entropy change in the universe when a 15.0 g ice cube melts (0°C) in your hand (37°C). Given: AfusH = 6.01 x 103 J/mol 9) Phase change at Boiling point Predict the normal boiling point in °C) of sodium, given that the entropy of 1 mol Na (l) changes by +84.8 J/K when it forms a vapour at 1 bar pressure, with ApapH = +98.0 kJ/mol Remember: The liquid...
What is the entropy change in J/K to the universe when a dry ice (CO2) sculpture weighing 386.1 g sublimates on a table top at 21.7 °C and the process occurs reversibly? The temperatures of the dry ice solid and vapour are both -78.5 °C, and the heat of sublimation of dry ice is 21.6 kJ/mol. (2 marks) (Give answer to 3 significant figures.)
Calculate the change in entropy (in J/K) that occurs when a sample containing 2.00 moles of water is heated from 10.00°C to 300.0 °C at 1 atm pressure. Molar Heat Capacity H2O(1) = 75.3 JK' moi? H2O(g) = 36.4 JK' mol Enthalpy of Vaporization at 100 °C = 40.7 kJ mol .-1 -1 Answer:
Determine the change in entropy of the universe,in J/k when 2 moles of nitrogen at 20 C are expanded isothermally in a piston-cylinder device with a change in pressure from 2 to 1 bar.The heat loss to the surroundings at 20 C is 3.4 kJ
The ΔG for the freezing of H2O(l) at -10 ∘C is -210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol . Find the entropy change of the universe when 2 mol of water freezes at -10 ∘C. (in J/K)
Determine the standard entropy change of the universe when 0.3 mol of NH4NO3 is produced, NH4 (aq) NO3(aq) NH4NO3(s), given the following information. (answer in J/K) AH (kJ/mol) S°(J/mol K) Substance NH4NO 3(s) -365.6 151.1 NH4 (aq) -132.5 113.4 NO 3 (aq) -205.0 146.4 Answer: 1575.1 Check
Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 1.25 kg of water decreased from 121 °C to 19.0 °C. Value Units Property Melting point Boiling point °C 0 100.0 °C AHfus 6.01 kJ/mol AHvap 40.67 kJ/mol Co (s) 37.1 J/mol · °C 75.3 coll Co (9) J/mol · °C J/mol · °C 33.6 52.25 52.25 kJ
An ice tray contains 490 g of liquid water at 0°C. Calculate the change in entropy of the water as it freezes slowly and completely at 0°C. J/K