A cylinder and piston system releases 328 J of heat and does 144 J of work pushing the piston against external pressure. State the value of q for this process with the correct sign. ____ J State the value of w for this process with the correct sign.  ____J State the value of the change in internal energy, ΔE, for this process with the correct sign.  ____J

Q: A gas expands from a volume of 0.550 L to 2.50 L against a constant pressure of 1.50 atm. What is…

A: A gas undergoes an expansion from a volume of 0.550 L to 2.50 L against a constant pressure of 1.50…

Q: When gasoline burns in a car engine, the heat released causes the products CO2 and H2O to expand,…

A: Given, work done by the expanding gases on the piston, w= - 541J  negative sign of work is because…

Q: Calorimeter can be used to identify a metal by determining its specific heat when a hot pellet of…

A: The amount of heat required to increase the temperature of one kilo gram of a substance by one…

Q: What is the change in internal energy of the system   (ΔU)  if   50 kJ   of heat energy is released…

A: Given - Heat energy released (q)= 50KJ              Work done by the system (w)= 40KJ   We have to…

Q: A sample of gas in a cylinder with a free-floating piston for a lid is heated. The gas gains 107 J…

A: given heat (q) = 107 J work done (w) = 23 J

Q: Consider the following cyclic process carried out in two steps on a gas. Step 1: Step 2: 40. J of…

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Q: 2.For a certain process, q and w are both negative. Which description below best describes what…

A: We know that: ∆E = q+w ( First Law of Thermodynamics) W = -pext ∆V

Q: 4. Which among the following refers to the value of internal energy. A 1025 J of heat energy is…

A: First law of thermodynamic says  Q = ΔE + W

Q: The enthalpy change for the combustion of C3H8(g) is -2220. kJ/mol. Calculate the heat of combustion…

A: Propane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: Calculate the heat (in Joules) involved in the process when 124 grams of water goes from a…

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Q: If a system absorbs 155.0 kJ of heat from its surroundings and the system does 65.0 kJ of work on…

A: Given that, System absorb heat, so q is positive, so,  q=+155.0 KJ also given, system does work, so…

Q: An unknown metal has a mass of 34.0 g.34.0 g. When 903 J903 J of heat are added to the sample, the…

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Q: In an ideal calorimeter, 250.0 mL of water at 50.O °C and 150.0 mL of water at 20.0 °C are mixed,…

A: Concept  According to calorimetry  Heat absorbed = Heat released

Q: Under Measurements show that the enthalpy of a mixture of gaseous reactants increases by 206. kJ…

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Q: Substance "C" is identified to have a specific heat capacity of 0.452 J/(g.°C). Which substances…

A: Answer: Specific heat capacity of the substance is defined as the amount of energy added into the…

Q: A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 127…

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Q: A gas compresses from an initial volume of 12.7 L to a final volume of 1.53 L against a constant…

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Q: A system does 551 kJ of work and loses 266 kJ of heat to the surroundings. What is the change in…

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Q: Calculate the energy required to heat 735.0 mg of silver from 6.9 °C to 13.0 °C. Assume the specific…

A: The specific heat of silver states that 0.235 Joule of heat is needed for an increase in the…

Q: A 125-g block of unknown substance with a temperature of 90 C is placed in a Styrofoam cup…

A: Given mass of water is 0.326 kg and that of the unknown block is 125 g, i.e 0.125 kg  Specific heat…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.61 kg sample…

A: In this problem, we are tasked with determining the molar heat capacity of a substance, C2H2Cl2,…

Q: A chemical reaction is run in which 756 Joules of work is done on the system and the internal energy…

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Q: In a process, the surroundings do 200 J of work on a gas, and the total energy change of the gas is…

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Q: A 28.5 g piece of gold is heated and then allowed to cool. What is the change in temperature (°C) if…

A: Given the mass of gold taken = 28.5 g Heat released by the gold, Qr = - 0.290 kJ  Note: Since heat…

Q: 28.5 g piece of gold is heated and then allowed to cool. What is the change in temperature ( °C) if…

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Q: A piece of metal (108 g) was heated up to 86 °C, then it was transferred into 194 g of water. The…

A: Given that : Mass of metal (mm) = 108 g Its temperature = 86°C Mass of water (mw) = 194 g Its…

Q: Calculate the energy required to heat 1.30 kg of ethanol from -1.7 °C to 11.4 °C. Assume the…

A: Heat absorbed by the ethanol is given by:Where,q = heat absorbedm = mass of the ethanolCv = heat…

Q: wires heat sample Water Stirrer nud Sample buming Steel sample outside chamber In an experiment, a…

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Q: Oliver heated a tungsten cylinder weighing 56.382 g in a hot water bath. While that was heating, he…

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Q: Oliver heated a tungsten cylinder weighing 57.647 g in a hot water bath. While that was heating, he…

A: The amount of heat change when the temperature is raised by 1 degree Celsius is called the Specific…

Q: A 2.62E1 g sample of aluminum at 1.008E2 °C is added to 1.002E2 g of water at 2.22E1 °C in a…

A: For a chemical reaction or physical process to occur a certain amount of energy should be furnished…

Q: 10. Given the following thermochemical equation, calculate the heat involved in decomposing 12.5 g…

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Q: A certain system absorbs 0.100 kJ of heat and has 0.800 kJ of work performed on it. What is the…

A: The formula for the calculation of internal energy is : internal energy(ΔE) = heat(q) + work(w)

Q: A system does 100 J of work on the surroundings while absorbing 300 J of heat from the surroundings.…

A: Given that  Heat absorbed (Q) = 300J

Q: heat of formation for a mole of nitrogen dioxide

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Q: A 2.4 kg aluminum engine block heats up to 131.8 °C. Engine coolant at 22.2 °C is added to prevent…

A: By help of Following formula, we can calculate the mass of coolant - M1 C1 ∆T1 = M2 C2 ∆T2 Here, M1…

Q: A chemical reaction is run in which 492 Joules of heat are generated and the internal energy changes…

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Q: Calculate the energy required to heat 123.0 g of ethanol from −0.2°C to 21.0°C. Assume the specific…

A: Heat capacity: The amount of heat required to increase the temperature of one gram of a substance by…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.20 kg sample…

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Q: Which balanced thermochemical equation corresponds to the standard enthalpy of formation (AHO) of…

A: The enthalpy of formation is the amount of energy released or absorbed during the formation of one…

Q: In a far planet from earth, a balloon containing a certain gas expands from 100 L to 250 L by…

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Q: A 28.79 g sample of a substance is initially at 21.2 ∘C. After absorbing 1817 J of heat, the…

A: Introduction The specific heat of any particular metal basically denotes the heat quantity required…

Q: A 24.0 g sample of an unknown metal at 99.0 °C was placed in a constant-pressure calorimeter…

A: Mass of the metal = 24 gInitial temperature of the metal = 99 oCFinal temperature of the metal =…

Q: A 100.0 g sample of an unknown metal is heated to 95.00°C. This hot metal is then placed into a foam…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.36 kg sample…

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Q: the temperature increases from 23.0°C to ________°C.

A: