50 gram sample of an unknown metal was heated to 100°C and then quickly transferred to an insulated vessel containing 50 grams of H2O at 25°C.  The final temperature of the water is 35°C. Which of the following must be true?       The metal lost more thermal energy than was gained by the water     The specific heat of water is less than that of the metal     The water gained more thermal energy than was lost by the metal     The specific heat of the metal is less than that of water     None of the other answers

Q: Determine the phase of a substance: Water at 2000C and 10MPa

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Q: What was the mass of water used if 249 g of a copper ball, initially at 314°C was immersed into the…

A: Given data: mc=249 gTc1=314°CTc2=38.8°Ccpc=0.387 Jg°Ccpw=4.184 Jg°CTw1=22.6°C

Q: A certain monatomic gas inside a cylinder is at a temperature of 22°C. It takes 628 J of work done…

A: The initial temperature of the gas is T1=22°C=22+273 K=295 K. The final temperature of the gas is…

Q: An 8.00 g ice cube at its melting point is added to 130 cm3 (130 g ) of tea (water) initially at…

A: Mass of ice cube, m = 8gMass of ice, mice = 8 gMass of tea/water, m = 130 gVolume of tea, V= 130…

Q: The following experiment is carried out: 10 moles of a gas are placed in a piston equipped with a…

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Q: 20 kg of foodstuff initially has a water content of 70% (dry basis). This material is dried to a…

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Q: 200 J of energy is transferred to a system consisting of 2.0 moles of an ideal gas. If the volume of…

A: GIVEN: 200 J of energy is added; 2.0 moles of idea gas; The volume is 2.6 L and remains constant, TO…

Q: An iron-carbon alloy initially containing 0.240 wt% C is exposed to an oxygen-rich and virtually…

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Q: Determine the degrees of freedom under the following conditions: (a) TI-20 wt% Pb at 325°C and…

A: Solution: Given Data: (a) TI-20 wt% Pb at 325°C and again at 400°C? (b) TI-40 wt% Pb at 325°C and…

Q: According to the U.S. Geological survey, the volume of water in oceans, seas, and bays is 1.41 ✕…

A: INTRODUCTION : The U-235 atom has 92 protons and 143 neutrons in its nucleus. When a U-235 atom's…

Q: The coal combustion in the furnace of steam power plant produces 31.52 mega-Watts (MW) of heating…

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Q: A cylinder which is in a horizontal position contains an unknown noble gas at 42100 Pa and is sealed…

A: Calculate the work done in isobaric process. dW = P*dV dW =P*(Pi*r2l)…

Q: An insulated piston-cylinder device contains 3 L of saturated liquid water at a constant pressure of…

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Q: The iron will be subject to further processing when its temperature is 500 degrees Kelvin. When will…

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Q: Steam at 100°C is used to warm 350 g of water contained in a 300 g aluminum container.  The initial…

A: The mass of the steam.Given:The mass of the water is .The mass of the aluminum is .The initial…

Q: In a fusion reaction, two deuterium nuclei (each of mass 2.014 u) fuse together and form Helium-3…

A: In order to determine the energy released in the fusion reaction in which two deuterium nuclei…

Q: Suppose we have a piece of a candy bar that has an initial mass of 28g.  If we ignite the piece of…

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Q: A 54g54g copper calorimeter contains 80cm380cm3 at 20∘C20∘C. A very cold 110g110g copper cylindrical…

A: Given Data Mass of the calorimeter is: mc=54 g Volume of the water is: vw=80 cm3 Density of water…

Q: For each part below, sketch T-s, T-v, and P-v diagrams. Clearly indicate the initial and final…

A: Given conditions are  a) Water is taken isobarically from a saturated liquid at 275 kPa to a final…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.