Calculate the change in entropy in the process freezing of 0.5 kg of ice at 0 °C and at pressure P= 1 atm at the same conditions (L= 3.33×10$ J/kg).
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- A 0.50-kg piece of aluminum at 250 °C is dropped into 1.0 kg of water at 20 °C . After equilibrium is reached, what is the net entropy change of the system?What is the minimum change of entropy that occurs in 0.200 kg of ice at 273 K when 7.40 x 104 J of heat is added so that it melts to water? O 2.71 x 10² J/K 3.69 x 10-³ J/K 7.4 x 104 J/K 3.11 x 10² J/K O 3.22 x 10-³ J/KFind the change in entropy that results when a 3.2-kg block of ice melts slowly (reversibly) at 1 °C. Assume that Latent frequency is 3.35 x 10^5 J/Kg.
- What is the decrease in entropy of 44.8 g of water that condenses on a bathroom mirror at a temperature of 39.7°C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg? Select the correct answer O 396 J/K O 189 J/K X Your Answer O 209 J/K 351 J/K O 251 J/KA rigid box contains 0.9 mol of an ideal monoatomic gas. Heat is added to the gas and its temperature changes from 183 K to 295 K. If this is a reversible process, what is the change in entropy of the gas in J/K?A block made of cobalt with a mass of 0.80 kg is heated to 850°C, then dropped into 5.00 kg of water at 10°C. What is the total change in entropy (in J/K) of the block-water system, assuming no energy is lost by heat from this system to the surroundings? The specific heat of cobalt is 420 J/(kg · K), and the specific heat of water is 4,186 J/(kg · K). (Hint: note that dQ = mcdT.)
- Calculate the change in entropy as 0.3989 kg of ice at 273.15 K melts. The latent heat of fusion of water is 333000 J/kg.A 100-lbm block of a solid material whose specific heat is 0.5 Btu/lbm·R is at 80°F. It is heated with 10 lbm of saturated water vapor that has a constant pressure of 20 psia. Determine the final temperature of the block and water, and the entropy change of the entire system. Is this process possible? Why?What is the change in entropy (in J/deg) when a 235- g piece of ice melts to water at 0 degrees Celcius?