A heat engine absorbs 2500 J of heat at 250°C and expels 2000 J at a temperature of 50°C. The change in entropy (in J/K) for the system i 10.9 3.2 0 4.7 1.4
Q: What is the change in entropy as 58.3 J flows from 331°C to 197°C?
A: Given: Q=58.3j T1=331 deg.c=604K T2=197 deg.c=470K Lets's find Change in entropy.
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- A container of ideal gas at standard temperature and pressure (273 K and 1 atm) undergoes an isothermal expansion and its entropy changes by 3.7 J/K. How much work does it do?For ice melting into water at 0 °C, the latent heat of fusion is Lp = 3.34 x 105 J/kg. For water boiling at 100 °C, the latent heat of vaporization is Ly = 2.26 x 105 J/kg. Which process involves a greater change in entropy? O melting 1.00 kg of ice at 0 °C O vaporizing 1.00 kg of liquid water at 100 °C the entropy change is the same for bothWhat is the decrease in entropy (in J/K) of 27.5 g of water that condenses on a bathroom mirror at a temperature of 32.0°C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg? J/K
- The entropy of a reversible process is Tds = du + pdv Obtain an expression for the change of entropy as a function of cp, P and T.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/KHow much energy must be transferred as heat for a reversible isothermal expansion of an ideal gas at 132°C if the entropy of the gas increases by 46.0 K