What are the signs for q and w to represent a system that's doing work on the surroundings, and gaining heat from the surroundings?

Q: Is Enthalpy an extensive property? Explain?

A: An extensive property is one that depends on the amount of material present. Whereas an intensive…

Q: A 2.855 g2.855 g sample of a new organic material is combusted in a bomb calorimeter. The…

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Q: which of the following signs on q and w represent a system that is doing work on the surroundings…

A: Given :-  System is doing work on surrounding  System is gaining heat from surrounding  To…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: From first law of thermodynamics ∆U = q+w Here ∆U = change in internal energy q = heat transfer w =…

Q: If we define the system as the reactants and products, what is the sign of work in this process,…

A: According to the first law of thermodynamics, the internal energy of a system can be changed by…

Q: A system gains 617 kJ of heat, resulting in a change in internal energy of the system equal to +161…

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Q: The air within a piston equipped with a cylinder absorbs 565 J of heat and expands from an initial…

A: Internal energy is the total energy present within a given system, which includes the kinetic energy…

Q: A system gains 647 kJ of heat, resulting in a change in internal energy of the system equal to +226…

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Q: What are the signs of q and w if a system absorbs 180 J of heat while expanding (performing work on…

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Q: A piece of hot silicon at 92.8°C weighing 78.3 g is dropped into a coffee cup calorimeter, which…

A: The heat gain will be equal to the heat lost. Qgain=-Qlost The change in heat can be calculated by…

Q: . What is the change in internal energy of the system (AU) if 82 kJ of heat energy is absorbed by…

A: According to the first law of thermodynamics, the internal energy is equal to the sum of heat…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: 1. ransferred from one system to another spontaneously? What is heat? How does heat differ from…

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Q: system that is doing work on the surroundings and also gaining heat from surroundings

A: Option 4. Is correct-> q= positive, w= positive We concentrate on the effect that a system (such…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

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Q: which of the following signs on q and w represent a system that is having work done on it by the…

A: • Sign Convention for Work, w i) w is positive, when work is done on the system by the surroundings…

Q: Define calorimetry and describe two commonly used calorimeters. In a calorimetric measurement, why…

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Q: Calculate the change in internal energy for a system that is giving off 45.0 kJ of heat and is…

A: According to the second law of thermodynamics, change in internal energy is related to heat and work…

Q: Why not all endothermic processes that do work on the surroundings have the same sign for internal…

A: Endothermic processes are the processes which absorb heat energy from the surroundings. These…

Q: Calculate the value of internal energy if 670J of heat energy is absorbed by the surrounndings and…

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Q: What is meant by the specific heat capacity of an object

A: To define the specific heat capacity of an object.

Q: . Calculate the work done on or by a system that absorbs 260 kJ of heat experiences a change in…

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Q: 1. What is the sign of q and w if heat is released from the system and work is done by the…

A: As the heat is released from the system that mean system lost some heat to the surroundings. So, q…

Q: State the law of conservation of energy. How does it relate to energy exchanges between a…

A: For an isolated system, its total energy remains constant. The energy of system will change if it…

Q: Calculate q, and determine whether heat is absorbed or released when a system does work on the…

A: Sign convention: Work done by the system on the surrounding = negative (-) Work done on the system…

Q: which material (aluminum , copper , lead) increase the temperature of water by the greatest amount…

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Q: For a process, 153 J of heat was released by the system and 267 Jof work was done on the system.…

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Q: ΔEsys

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Q: Is the change in enthalpy for a reaction an extensive property? Explain the relationship between ΔH…

A: The enthalpy of the reaction is considered as the state function that is it depends only on the…

Q: What is the change in the internal energy of the system if the surroundings releases 300J of heat…

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Q: A 3.065 g3.065 g sample of a new organic material is combusted in a bomb calorimeter. The…

A: Mass of sample = m = 3.065 g heat capacity (calorimeter constant) of the calorimeter (C) =  36.51…

Q: 1.) The internal energy of a system increases 253 J , while the system loses 93 J of heat.…

A: Internal energy (∆E) :-         It is the energy of a thermodynamic system which is present in that…

Q: Provide the definition of the second law of thermodynamics. How does the second law explain why heat…

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Q: What is the value of ∆? in a system wherein a car engine that releases heat pushing the piston,…

A: By FLOT Internal energy change for the system ( ∆U): ∆U = ∆q + w      = -325 - 451       = - 776 J

Q: A system has 400J of heat added to it and then subsequently use 160J to do work. What is the change…

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Q: Work is done on the system and heat is absorbed by the system. What are the signs on heat and work?…

A: Solution: According to the IUPAC sign conversation, work done (W) by system means there is decrease…

Q: The work done to compress a gas is 70 J.  As a result, 25 J of heat is given off to the…

A: Work done to compress = Work done on the system And work done on the system is taken with a positive…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: There are certain sign conventions related to work and heat based on system and surroundings.

Q: What is the change in internal energy of the system (AU) if 82 kJ of heat energy is absorbed by the…

A: According to the first law of thermodynamics, the internal energy is equal to the sum of heat…

Q: Two metals of equal mass with different heat capacities are subjected to the same amount of heat…

A: Heat capacity(s) is the heat required by any substance to raise its temperature by 1°C. Following is…

Q: Consider the following thermochemical equation: Fe2O3 (s) + 2 Al (s) --> 2 Fe (s) + Al2O3 (s)   ∆H…

A: The answer to the following question is given as:

Q: What is the standard enthalpy of formation for a compound? For a pure element in its standard state?

A: Standard enthalpy of formation of a compound is equal to the change in the enthalpy during the…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: The answer is as follows:

Q: Two metals of equal mass with different heat capacities are subjected to the same amount of heat.…

A: Please have a look on the answer:

Q: The standard molar enthalpy of formation for oxygen gas, O2(g), is zero. The enthalpy of formation…

A: Molar enthalpy of formation of a substance is the energy required or released when one mole of a…

Q: A metal cools from an initial temperature of 150 degrees C to 50 degrees C and releases 190 J of…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: Consider the two reactions. 2 NH, (g) + 3 N,0(g) → 4 N,(g) + 3 H,O(1) AH° = -1010 kJ %3D 4 NH, (g) +…

A: Consider the target equation is as follows; N2 g + 12 O2 g → N2O g          Consider the given…

Q: If energy flows into a chemical system and out of the surroundings, what is the sign of ΔEsurr?

A: Given that,  Energy flows into a chemical system and out of the surroundings

Q: What effect would leaving the lid off the coffee-cup calorimeter have on the specific heat (higher,…

A: Less specific heat, because only some amount of the heat is transferred to the water whereas the…

Q: The work done to compress a gas is 69.0 J. As a result, 37.0 J of heat is given off to the…

A: Given, Heat given off q = 37 J , work done w = 69 J , change on energy ∆U = ?