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3P Compute the change in internal energy and enthalpy when 45 gr of ice at 100...
Calculate the change in internal energy, change in enthalpy, work done, and the heat supplied in...
Calculate the change in internal energy, change in enthalpy, work done, and the heat supplied in the following processes: (a) An ideal gas is expanded from 5 bar to 4 bar isothermally at 600 K (b) An ideal gas contained in a vessel of 0.1 m3 capacity is initially at 1 bar and 298 K. It is heated at constant volume to 400 K. (Assume that Cp = 30 J.mol-1.K-1)
1. Calculate the enthalpy change, ΔH, for the process in which 31.6 g of water is...
1. Calculate the enthalpy change, ΔH, for the process in which 31.6 g of water is converted from liquid at 0.4 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). 2. How many grams of ice at -16.2 ∘C can be completely converted to liquid at 10.2 ∘C if the available heat for this process is 4.27×103 kJ ? For ice, use a specific heat of 2.01...
CL0_2 Ability to evaluate changes in enthalpy, internal energy and entropy of real gases using generalized...
CL0_2 Ability to evaluate changes in enthalpy, internal energy and entropy of real gases using generalized charts. Answer the following question: Water vapor at 1000 kPa and 600°C is expanded to 500 kPa and 400°C. Calculate the change in the specific entropy and enthalpy of this water vapor using the departure charts and the property tables.
The change in enthalpy when 1 mol of ice is melted at 273K is 6008 J Heat Capacity of liquid water, Cp_{L} = 75.44 J/mol K Heat Capacity of solid water, Cp_{S} = 38J/mol K Enthalpy chage of melting at...
The change in enthalpy when 1 mol of ice is melted at 273K is 6008 J Heat Capacity of liquid water, Cp_{L} = 75.44 J/mol K Heat Capacity of solid water, Cp_{S} = 38J/mol K Enthalpy chage of melting at 273K, \Delta H_{273}=6008 J Calculate the standard enthalpy of fusion for ice. Calculate the heat released when 100 g of water supercooled at 250K solidify Initial T=25°C=298K Thanks
2. Find the changes in internal energy (AU) and enthalpy (AH) per kmol, for air going...
2. Find the changes in internal energy (AU) and enthalpy (AH) per kmol, for air going from 10 bar, 277 K and 2.28 m3/kmol (molar volume), to 333 K and 1 atm. Use the following: 4 Cp = 29.3 kJ kmol-? K-1 Cy = 21 kJ kmol-? K-1 PV/T = constant Do not use any additional properties of ideal gases. There is no need to prove the gas is ideal or to use such properties. Hint: split the process up...
When water changes from the liquid phase to the gaseous (vapor) phase, energy is required for the H2O molecules to escape their mutual molecular attraction (the internal energy change ufg in the steam...
When water changes from the liquid phase to the gaseous (vapor) phase, energy is required for the H2O molecules to escape their mutual molecular attraction (the internal energy change ufg in the steam tables) and for the volume expansion (P·vfg). The total heat of vaporization for the phase change is represented by the enthalpy change hfg in the steam tables. Use the steam tables to calculate the fractions of energy for the volume expansion and for the molecules to escape...
Solve for the enthalpy change when 45.1 g of H,O changes from the gas to the...
Solve for the enthalpy change when 45.1 g of H,O changes from the gas to the liquid phase. AH = 40.7 kJ/mol and C for water vapor = 33.1 J/mol-K Click the answer you think is right. -102 kJ +102 kJ -1.84 x 10 kj 82.8 kJ
Calculate the change in entropy that occurs when 18.02 g of ice at –17.5°C is placed...
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
Find the internal-energy change when 4.32mol of chlorine (Cl2) gas is warmed by 70degC.
Find the internal-energy change when 4.32mol of chlorine (Cl2) gas is warmed by 70degC.
400 J of heat is added to a system. If the change in internal energy of...
400 J of heat is added to a system. If the change in internal energy of the system was 850 J, how much work was done on by the system? the inside a container absorbs 250 J of hea while 125 J of work is done on it and then does 70 J of its own work, by how much does the internal energy of the gas increase? 7.500 joules of heat is added to a system while it also...
CL0_2 Ability to evaluate changes in enthalpy, internal energy and entropy of real gases using generalized charts. Answer the following question: Water vapor at 1000 kPa and 600°C is expanded to 500 kPa and 400°C. Calculate the change in the specific entropy and enthalpy of this water vapor using the departure charts and the property tables.
2. Find the changes in internal energy (AU) and enthalpy (AH) per kmol, for air going from 10 bar, 277 K and 2.28 m3/kmol (molar volume), to 333 K and 1 atm. Use the following: 4 Cp = 29.3 kJ kmol-? K-1 Cy = 21 kJ kmol-? K-1 PV/T = constant Do not use any additional properties of ideal gases. There is no need to prove the gas is ideal or to use such properties. Hint: split the process up...
Solve for the enthalpy change when 45.1 g of H,O changes from the gas to the liquid phase. AH = 40.7 kJ/mol and C for water vapor = 33.1 J/mol-K Click the answer you think is right. -102 kJ +102 kJ -1.84 x 10 kj 82.8 kJ
400 J of heat is added to a system. If the change in internal energy of the system was 850 J, how much work was done on by the system? the inside a container absorbs 250 J of hea while 125 J of work is done on it and then does 70 J of its own work, by how much does the internal energy of the gas increase? 7.500 joules of heat is added to a system while it also...
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