entropy

18.25

The entropy change for the processH2O(s)⟶H2O(l)is 27.9 J/K and requires that the surroundings transfer 35.0 kJ of heat to the system. Calculate the change in entropy for the universe in kJ/K at 56.2 °C.

Please don't provide handwritten solution ....

Given the data in the table in the figure at 1 atm and 25.0 °C, calculate the standard heat of reaction, ∆H°₂₅, for the reaction Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)   A) 216.8 kJ are evolved per mole B) 88.0 kJ are evolved per mole C) 88.0 kJ are absorbed per mole D) 216.8 kJ are absorbed per mole

Calculate the work w when 5.8 litre of an ideal gas at an initial pressure of 83.1 atm is expanded or compressed isothermally to a final volume of 83.1 litres reversibly. Give your answer in J.

If 2.0 mol of hydrogen gas and 3.0 mol of argon gas are mixed at the same pressure and temperature, a.)what is the change in entropy? b.)If this process was carried out isothermally at 298.15 K, what is the change in molar Gibbs free energy?

Calculate the heat of reaction at 500 K for the combustion of methane, CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) by using the date on the temperature dependence of heat capacities.

This question requires the use of the extracts from the tables of thermodynamic properties supplied.  Ammonia, NH3, was once a commonly used refrigerant. In a particular (very old) refrigeration plant, ammonia has a pressure of 2.9 bar and a temperature of 40 oC. What would be the specific enthalpy of the ammonia under these conditions.   a. 1665 kJ/kg b. 1433 kJ/kg c. 135 kJ/kg d. 1552 kJ/kg e.  1622 kJ/kg