A heat engine that operates between two heat reservoirs at 900 ° C and 0 ° C, respectively, it has an efficiency of 35% and receives 21 kJ. If the tank temperature low is the environment, determine its entropy variatio
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- 9:EAI OEO"llzain IQ نقطنان )2( Initially 5 mol of an ideal gas, with CV,m = 12.5 J K-1 mol-1, are at a volume of 5 dm3 and a temperature of 300 K. If the gas is heated to 373 K and the volume changed to 10 dm3, what is the entropy change 42.4 J.mol-1.K-1 24.4 J.K-1 O 24.4 J.mol-1.K-1 42.4 J.K-1 (O öslg äbäi Predict which of the following substances has the highest entropy value at 25°C Mgo (s) O Снзон (1) со (д) CaCO3 H20 (I)Q2. What is the total change in entropy when 5.0 kg Of water at 15'℃ is brought into contact with a large heat reservoir at 1000C, after the water reached the temperature of the reservoir - -4186 J/kg,K 18. O53. What is the decrease in entropy of 25.0 g of water that condenses on a bathroom mirror at a temperature of 35.0° C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg?
- Heat flows into 1kg of ice at 0°C, melting it, then warming the liquid up to 100°C, then boiling the liquid to vapor. 1) How much heat does it take to melt 1kg of ice, starting at 0°C? Q= Submit 2) How much does the entropy increase when the ice melts? Sliquid-Sice= J/K Submit 3) How much does the entropy increase when the 100°C water boils? J/K Submit 4) For the liquid water, the specific heat is 4184 J/kg-K, nearly constant over the 0°C to 100°C range. How much does the entropy increase in the warming from 0°C to 100°C? J/K Submit Help 5) By how much does the dimensionless entropy, S/k, increase per molecule of ice as it melts. Use 0.018 kg/mole as the molecular weight. SubmitCalculate the entropy of rolling a die three times such that the sum of numbers for the first two observations is divisible by the number obtained third time. (a) 6.47 x103 J/K (b) 2.03 m -kg-s.K (c) 2.81 m² - kg -s. K (d) 2.81x10-3 J/K30 grams of ice at -5 Celsius melt while being left at room temperature of 28 Celsius. After melting its temperature rises to 28 Celsius. Determine the total change of entropy of the ice. [Cice = .5 cal/g.C, Lf = 79.6 cal/gram] 1 calorie = 4.184 J Options: A. 49.97 J/K B. 34.68 J/K C. 53.11 J/K D. 38.27 J/K E. 44.22 J/K