127. Water is heated on a stove. The temperature of the water rises (i) from 20°C to 30°C (ii) from 30°C to 40°C (iii) from 80°C to 90°C. In which case the change in entropy is greatest (a) (i) (c) (iii) (b) (ii) (d) (ii) and (iii)

127. Water is heated on a stove. The temperature of the water rises (i) from 20°C to 30°C (ii) from 30°C to 40°C (iii) from 80°C to 90°C. In which case the change in entropy is greatest (a) (i) (c) (iii) (b) (ii) (d) (ii) and (iii)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

53. When an aluminum bar is connected between a hot reservoir at 725 K and a cold reservoir at 310 K, 2.50 kI of energy is transferred by heat from the hot reservoir to the cold reservoir. In this irreversible process, cal- culate the change in entropy of (a) the hot reservoir, (b) the cold reservoir, and (c) the Universe, neglecting any change in entropy of the aluminum rod.
#8. (14) What is the change in entropy of 570 g of ice as it melts into water?
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)
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 variation. a) -50 J / K b) 296.7 J / K c) 50 J / K d) ∞
Which statement regarding entropy is false? A child builds a tower from a pile of blocks. The entropy of the blocks increases. A layer of salt then a layer of pepper are placed in a jar then shaken. The entropy of the salt and pepper increases. Gasoline is burned in a car engine to form exhaust. The entropy of the gasoline increases. A candle burns to heat the surrounding air. The entropy of the candle and surrounding air increases.
What 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
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/K
53. 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?
B9] The figure below describes n moles of an ideal gas undergoing a Carnot cycle. (P.V.) (ii) (i) (P,V) (ii) (P.V.) (P,V.) (iv) V. a) Is this Carnot cycle operating as a heat engine or as a refrigerator? Why? b) Which of the 4 stages labelled (i) to (iv) corresponds to a quasi-static adiabatic compression and which to an isothermal expansion? c) Show that the change in entropy of an ideal gas expanding isothermally from a volume Vw to a volume Vhugh is given by Viugh AS = nR ln d) Show that V4 e) Write down expressions for the change in entropy of the gas at each stage of the Carnot cycle in the figure. What is the total change in entropy of the gas during the Carnot cycle?
(1) - When a system changes from an equilibrium state A to another equilibrium state B, choose the correct statement for each of the quantities (i – iii): (i) Heat; (ii) Entropy; (iii) Work done by the system. Statements: " (a) "It's a quantity that is determined uniquely for states A and B.' (b) "It's a quantity that is determined by the change between states A and B, and also by specifying how the system changed from A to B."
29) Calculate the change in entropy (AS) for the process of freezing 2 kg of liquid methane at 182°C to solid methane at -182°C. Heat of melting/freezing for methane is 59 kJ/kg. A: 0.94 kJ/K B: -0.94 kJ/K C: 1.3 kJ/K D: -6.0 kJ/K E: - 1.3 kJ/K Considering just
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. Submit