The heat of melting of ice at 1 atmosphere pressure and 0°C is 1.4363 kcal/mol. The volume of ice is 0.0196 liter and the volume of water is 0.018 liter. If 1 mole of ice is melted under these conditions, what will be a. The work done in cal? b. The change in internal energy in cal? The change in entropy in cal?
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- The heat of melting of ice at 1 atmosphere pressure and 0°C is 1.4363 kcal/mol. The volume of ice is 0.0196 liter and the volume of water is 0.018 liter. If I mole of ice is melted under these conditions, what will be a. The work done in cal? b. The change in internal energy in cal? c. The change in entropy in cal? Note that 1 literxatmosphere is equal to 101.325 joule.The heat of melting of ice at 1 atmosphere pressure and 0°C is 1.4363 kcal/mol. The volume of ice is 0.0196 liter and the volume of water is 0.018 liter. If 1 mole of ice is melted under these conditions, what will be a. The work done in cal? b. The change in internal energy in cal? c. The change in entropy in cal? Note Note that 1 literxatmosphere is equal to 101.325 joule. Sol": given Heat of melting ice at 1 atm pressure = 1.4363 kca kcal/ 2 = 1.4363 kcal/mole mole volume of ice = 0·0196 lts " water = 0.018 lts @ work done is define as w=pdv » w = P(V₁ hot W = 1 (0·018-00196) W = 0·0016 Cal Pay Kat AnsThe given P-V diagram relates to a fixed quantity of CO2, assumed to be an ideal gas. The temperature at point A is 35 degrees celsius. 1. What is the total mass of CO2? 2. What is the temperature at point C in degrees celsius 3. What ist he heat added to the gas over the ABCA cycle 4. 3200 J of heat flows out of the system when the system is taken ont he straight path from C and A. What is the change in internal energy along that path?
- A hot reservoir at 1700C transfers 400 kJ of heat to a cold resevoir at 500 C. What is the total change in entropy? a. 1,210 J/K b. 335 J/K c. 5,560 J/K d. 130 J/K e. 0.000 J/KThe increase in internal energy is. . for one mole of water under a pressure of 1013 N/ m2 and a temperature of 273K when it turns into steam under the same temperature and pressure, knowing that the amount of heat needed to evaporate water is 40680 J and the mole volume of an ideal gas is 0.0224 cm3 and *.for water it is 0.000018 cm3Ue A:0r * Il. pluls ► exam 1.pdf Q1// Define the following First law of thermodynamics, adiabatic process, Boyle's law, Reversibility, and Pressure. Q2// Ten kg of oxygen are heated from 350 to 500 K at constant pressure. Calculate the change of enthalpy, change internal energy, heat transfer and work done. Take Cp-0.909, Cv=0.649 Q3// In a nozzle air at 700°C and twice atmospheric pressure enters with 50 m/s velocity, and leaves at a temperature of 40°C. Determine velocity of air at exit. Take Cp = 1.005 kJ/kg.K for air.
- Can you help with subpart d 5. A Carnot engine works between two heat reservoirs at temperatures Thot= 301.0 K and Tcold= 220.0 K. a. What is its efficiency? b. If it absorbs 200.0 J from the hot reservoir during each cycle, how much work does it do per cycle? c. How much heat does it reject during each cycle? d. What is the coefficient of performace, COP, of this engine when it works as a refrigerator between the same two reservoirs?A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic ideal gas. p (Pa × 105) 2.0 a b 0.010 C ➤ V(m³) O 0.040 a. What temperature is the gas at state c? b. What temperature is the gas at state a? c. How much heat is added/removed from the gas over the path c-to-a? d. What is the pressure of state a? e. What is the temperature of state b? f. Find the work and heat for path a-to-b. g. Find the work and heat of path b-to-c. h. Find the efficiency of the engine. i. Would the engine be more, or less efficient if the gas were diatomic?Suppose a woman does 650 J of work and 9300 J of heat is transferred from her into the environment in the process. a. What is the change in her internal energy, in joules, assuming she does not consume any food? b. What is her percent efficiency?
- Constant amount of ideal gas is kept inside a cylinder by a piston. The piston is locked in to position, it is not allowed to move. The gas is then heated up. Compare the initial (i) and the final (f) physical quantities of the gas to each other. W The temperature Tf is ... Tj. ◆ The entropy Sf is... S₁. The pressure pf is Pi. ◆ The internal energy Uf is ... U₁. The volume V₁ is ... V₁. Vf equal to less than greater than Send FeedbackConstant amount of ideal gas is kept inside a cylinder by a piston. Then the gas expands isobarically. Compare the initial (i) and the final (f) physical quantities of the gas to each other. ◆ The pressure pf is Pi. The temperature Tf is ... Tj. The entropy Sf is ... S₁. The volume Vf is . V₁. ... The internal energy Uf is ... U¡. equal to less than greater than Send FeedbackQuestion B2i. Give an equation for the infinitesimal change in entropy, ??, of a system in terms of the heat transfer ??? and the temperature ? at which the heat transfer occurs. Explain the sign convention. ii. A litre of water at 20 °C is placed in a fridge at 5 °C. Calculate the change in entropy of the water, including the sign, once all the water has come into thermal equilibrium. iii. Calculate the change in entropy of the fridge from part ii, including the sign. iv. Demonstrate that the Second Law has been obeyed in the process described in ii and iii.