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: At noon a batch of molten iron at a temperature of 1500 degrees Kelvin is removed from a furnace to…

A: The process will be annealing as the hot metal is allow cool slowly in order to remove internal…

Q: In the following conditions; determine its properties: a. P=2.0 MPa, x=90% b. T=2000C and x=80%

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Q: mass of the copper?

A: GIVEN- Heat (q) = 1386J T1= 20 deg.c T2= 80 deg.c Copper heat capacity (C) = 0.385 J/g ° C   To…

Q: A) Calculate the differences in the chemical potentials of ice and super-cooled water at -5 00 C and…

A: Given: The temperature, T = -5°C The pressure, P = 1 atm

Q: At 500°C (930°F), what is the maximum sol- ubility (a) of Cu in Ag? (b) Of Ag in Cu?

A: the maximum sol- ubility (a) of Cu in Ag? (b) Of Ag in Cu?At 500°C (930°F).

Q: A piece of ceramic of mass equals to 0.015 kg initially at 15°C receives 45000J in form of heat when…

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Q: What is the final gas pressure?

A: Final gas pressure need to find.

Q: Homework 5 -Problem II –- In following figures, which one is in a good heat transfer? Why? Please…

A: given:

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: A piston cylinder assembly has 0.5 m3 of nitrogen gasa t 0.4 MPa and 300 K. If the electric…

A:

Q: Consider a Cu-30% Ag system which is cooled from 900°C to 778°C. What is the amount eutectic Alpha…

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Q: f 14.8kJ of heat is given off when 1.6g of HCI condenses from vapor to liquid. What is ΔHcond for…

A: First, determine the molar mass of the given compound with the help of the atomic mass.

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: ΔHvap =31.3 kJ/mol for acetone. If 1.40 kg of water were vaporized to steam in a boiler, how much…

A: We know that Q=mw*Lw Lw=Latent heat of water=2260KJ/kg mw=mass of water=1.4 Q=1.4*2260 Q=3164 KJ As…

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

A:

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

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Q: What is the total thermodynamic heat released by heating 2 kg of solid ice at 0°C (2093 J/kg-K) to…

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

A:

Q: 1. A 400-gm aluminum can is filled with 2 liters of water at 30°C. A 100-gm lead is heated to 300°C…

A: as per our guidelines we are supposed to answer?️ only one question. Kindly repost other questions…

Q: t is required to freeze 1.50 metric tons of fresh lean beef from 4.00C to −21.0C within 24.0 h…

A:

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: Once upon a time, an engineering is conducting an experiment wherein he uses 10 moles of a gas. He…

A: Given data: n=10 molesP1=0.5 barT1=300 KT2=T∞=600 KCv=2.5RM=10 kgCV=1.5 kJ/kg⋅K

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…

A:

Q: ● Calculate the work needed to compress 1 mole of hydrogen from 0.1 MPa to 100 MPa at room…

A: given  hydrogen are diatomic gas  mole = 1।              Temp=25°c=298k p1= .1mpa p2=100mpa process…

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: Develop a general equation for the standard heat of reaction as a function of temperature for one of…

A: heat of reaction =  heat of product - heat of reactants Heat of reactants are considered at a…

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: sketch these processes with respect to the saturation lines on a single T-s diagram

A: The Temperature-entropy diagram shows the variation of temperature with entropy during the process…

Q: Stepwise Solution please. With the help of Maxwell equations prove that the specific heats of ideal…

A: Write the Maxwell equations. ∂T∂Vs=-∂P∂sV               ...... (1)∂T∂Ps=∂V∂sP…

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.