Study Guide Mix n Match: Heat is Energy moving from low temperature to high temperature. Energy moving from high temperature to low temperature. The same as temperature. The First Law of Thermodynamics defines

Q: A thermodynamic process occurs with a heat lost by the system. Does the entropy of the system…

A: No beacuse heat loss means increase in entropy according to second law  of thermodynamics.

Q: The temperature inside of a house is 27 ºC and outside is –23 ºC ? Determine the change in entropy…

A: The change in entropy of the system at constant temperature is given by  Where  = Entropy Change,…

Q: Explain the implications of the Second law of Thermodynamics ?

A: The Second Law of Thermodynamics  The second law of thermodynamics tells about entropy. Entropy is…

Q: An ideal heat engine would have 100 percent efficiency if its input hot reservoir were A) 1000…

A: The efficiency of a cyclic heat engine is given by- η=1-TCTHwhere,η is efficiencyTC is temperature…

Q: A container with 41 g of a certain liquid (c = 4171 J/kg · °C, Lv=2224 kJ/kg) at 22 °C is heated up…

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Q: 40) A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges…

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Q: A large block of copper initially at 23.0°C is placed in a vat of hot water (83.3°C). The first 1.40…

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Q: In every cycle of its operation, a Carnot engine takes in 640 J of heat from a reservoir at 380 K…

A: Given, heat taken from reservoir, Q = 640 J temperature of reservoir, TH = 380 K TC = 300 K

Q: The choices below are all efficiency ratings for heat engines. Which is a Carnot engine?

A: Efficiency of any Carnot engine is always less than 1.                                  η=1-T2T1<…

Q: Which of the following statements about an ac process is untrue? The change in entrony is zero

A: Given Data : Adiabatic process

Q: 4. If 80J of heat flow from a 40°C block into a 20°C block, what is the change in entropy of both…

A: One of the blocks is at a temperature of 40o C while the other is at a temperature of 20o C. 80 J of…

Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: Which has a higher entropy, 1 kg of liquid water at 60°C or 1 kg of saturated water vapor at 40°C?…

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Q: 8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained…

A: solution- assumptions- 1. This is a steady flow process. 2. Air is an ideal gas. 3. Potential energy…

Q: Which of the following processes does not involve a change in entropy?A. An electric heater raises…

A: Entropy change is the measure of change in thermal energy per unit temperature of the system.

Q: 1. What is the efficiency of a steam engine if it absorbed an energy of 2.5 x 108 J from the boiler…

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Q: 12. Which, of the following temperature changes, would show the smallest change in entropy for a pan…

A: We can calculate change in entropy using  , ∆s = Cp x lnT2T1  Since Cp is common in all, the change…

Q: a heat of fusion of 80 cal/g and a heat of vaporization of 540 cal/g. What is the entropy change in…

A: Given data -                  amount of water (m)= 30 g                  latent heat of fusion (l) =…

Q: During one complete cycle of a heat engine process, which of the following quantities is nonzero?…

A: The correct option is (c). The work done.

Q: Physical systems work in a “one-way street” – the amount of information we have about the state…

A: Energy : It is the ability of an object to do work. There are different types of energy. Example:…

Q: A 4.50-kg block of ice at 0.00℃ falls into the ocean and melts. The average temperature of the ocean…

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