7. Write the mathematical expression for the specific enthalpy for water (incompressible material). Determine the change in total enthalpy when 5.00 lbm of ice is heated from 22.0 to 32.0 oF under constant atmospheric pressure.
7. Write the mathematical expression for the specific enthalpy for water (incompressible material). Determine the change...
7. Calculate the enthalpy change, ΔH, for the process in which 36.2 g of water is converted from liquid at 3.2 ∘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). 9. The instruction booklet for your pressure cooker indicates that its highest setting is 13.4 psi . You know that standard atmospheric pressure is 14.7 psi, so the booklet must mean 13.4 psi above atmospheric pressure. At...
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of freezing. 2. The water above is then heated to boiling point under standard atmospheric pressure. - determine the volumetric change in gallons Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of...
A constant specific heat ideal gas has a gas constant of 42.92 ft·lbf/(lbm·R) and a constant pressure specific heat of 0.200 Btu/(lbm·R). Determine the heat transferred and the change of total entropy if 9.00 lbm of this gas is heated from 40.0 °F to 340 °F in a rigid container.
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle? 3. Air...
Calculate the enthalpy change upon converting 1.00 mol of ice at -25 °C to steam at 125 °C under a constant pressure of 1 atm. The specific heats of ice, liquid water, and steam are 2.03, 4.18, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol and ΔHvap=40.67 kJ/mol.
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...
1.) Determine the enthalpy change when 62.0 g of steam at 135.0 oC is cooled to ice at –15.0 oC. Use the actual enthalpy and heat capacity values 2.) A heater in a hot water tank gives off 30,000 KJ per hour. The initial temperature of 450 kg of water in the tank is 18.0 oC. If the tank is heated for 90 minutes, determine the final temperature of the water. 3.) In general boiling and melting points increase with...
Determine the volume change, in ft", when 1 lb of water, initially saturated liquid, is heated to saturated vapor while pressure remains constant at 90 lbf/in.2
1. Ice melts at 0C° with an enthalpy of fusion = 6.01 kJ mol-1 . An ice cube with a mass of 20.0g is placed inside an incubator at 40.0C°. Determine the total entropy change (in J/K) of this system. 2. Calculate the total entropy change (in J/K) when 50.0 g of H2 gas initially in a tank at a pressure of 145 psi is withdrawn from the tank under a constant pressure of 23.0 psi at standard room temperature....
ow Help 101.2019,0-C.pdf UESTION 2 hat is a compressible flow? When do you say that the flow is compressible and what is the lach number beyond which the flow is said to be compressible? For an incompressible flow machine define the flow coefficient. At what speed the blade must run to get a flow coefficient equal to 0.5. if the average meridional speed is 100 m/s QUESTION 3 Define reheat factor. What is the range of reheat factor? What is...