4. a) What is the enthalpy change for a system undergoing a volume change of 500.0 mL to 25.0mL under a constant pressure of 435 mmHg, if the internal energy of the system changes by the amount of 2.7kJ? b) What is the amount of heat flow under these conditions?

Q: A 5.52E1 g sample of water at 9.973E1 °C is placed in a constant pressure calorimeter. Then, 2.32E1…

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Q: In order to calculate the total heat flow for a process in the calorimeter, you will need to…

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Q: A gas expands and does 256 J of work on its surroundings. At the same time it absorbs 220 J of heat…

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Q: A piston compresses the air in the cylinder by doing 84J of work on the air. As a result, the air…

A: Given,  What is change in internal energy = ΔU = ?

Q: The value of ∆E for a system that gains 115kJ of work from the surroundings and loses 79 kJ of heat…

A: The value of ∆E for a system that gains 115kJ of work from the surroundings and loses 79 kJ of heat…

Q: The standard heat of combustion of propanol, C3H7OH, is 2021 kJ/mol. How much heat would be…

A: Number of moles of any substance can be calculated by dividing the mass of the substance with its…

Q: When 320 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter, the temperature rose by 3.05…

A: An apparatus used to determine the heat associated with chemical or physical reactions is called a…

Q: At very low temperature, the specific heat of rock salt varies with temperature according 3 to the…

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Q: A chemical reaction in a bomb calorimeter evolves 5.17 kJ of heat. If the heat capacity of the…

A: Given, the heat evolved, q = 5.17 kJ Heat capacity, c = 1.08 kJ/°C Temperature, ΔT = ? The formula…

Q: The standard heat of combustion of gaseous cyclopentane, C5H10(g), was measured to be −3319.5…

A:

Q: Assume that a particular reaction evolves 244kJ of heat and that 35kJ of PV work is gained by the…

A: Given that: Heat evolved (q) = -244 kJ (negative sign indicate that heat is released) P∆V = -35 kJ…

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: Consider two 50.0 mL volumes of water, one at 20.0 °C and the other at 100.0 °C. What is the heat…

A: Given, Volume of water in two separate Container = 50 mL Temperature of one of the water = 20◦c…

Q: Given delta U= q + w, if 13 kJ of heat was absorbed by a system and 9kJ of work was done on the…

A: Internal energy is the total energy of a system that consists of kinetic and potential energies. The…

Q: What is the reletionship between internal energy, heat capacity and enthropy?

A: The amount of energy required to increase the temperature of a substance by one degree celsius is…

Q: 2.25 g of C6H12O6 is burned in a bomb calorimeter containing 550. g of water and the temperature…

A: Temperature change (ΔT) taking place is given.

Q: Find the change in internal energy when 175 kJ of work is done on a system that evolves 50 kJ of…

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Q: A balloon is inflated with air from an initial volume of 1.44E-1 L to 2.16E0 L against an external…

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

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Q: When 10.000 gm of oxalic acid, H2C2O4, are burned in a bomb calorimeter that has a total heat…

A: The amount of heat released in the combustion of oxalic acid is absorbed by the bomb calorimeter to…

Q: When 23.6g of calcium chloride, Was dissolved in water in a constant pressure calorimeter, the…

A: For heat capacity ,heat and temperature ,there is a relation for all: q=c×△TWhere:q= Heat…

Q: What is the change in internal energy of a system that absorbs 600 KJ of heat energy at the same…

A: Given,  a system that absorbs 600 KJ of heat energy at the same time does 450 KJ of work. Therefore,…

Q: A 7.55g sample of aniline (C6H5NH2 , molar mass = 93.13g/mol) was combusted in a bomb calorimeter…

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Q: A sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter.…

A: q= m c ∆Tq=Heat absorbed or evolvedm=mass of substancec=specific heat capacity∆T=final…

Q: Three moles of nitrogen at 30°C are contained in a container of a certain volume. If we ignore the…

A: Given: moles of nitrogen gas = 3 mol Initial temperature (T1) = 30° C Final temperature (T2) = 250°…

Q: a system recieves 425J of heat and delivers 425J of work toits surroundings. what is the change in…

A: Given Heat ( q ) = +425 J ( as heat is received to system ) Work ( w) = +425 J ( as work done by…

Q: A 13.6 g metal block is warmed to 79.7°C and plunged into an insulated calorimeter containing 46.2 g…

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Q: gas in a cylinder is compressed by a piston. If the work done by the piston is 451 J, and the system…

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Q: A gas is expanding against a constant pressure of 3 atm from a pressure of 18.0 to 23.0 L and…

A: Here we are required to find the change in the internal energy of the system.

Q: When 2.76 g of cesium perchlorate (CsClo,) is dissolved in 103 g of water in a styrofoam calorimeter…

A:

Q: 1. a. (i) The work done to compress a gas is 85.0 J. As a result, 21.0 J of heat is given off to the…

A: Given that w = 85.0 j (it is positive because work done on gass)  q = - 21.0 j (it is negative…

Q: A system does 551 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in…

A: Given Data : 1. Work done (W) = -551KJ 2. Heat to the surroundings (Q) = -216 KJ Work done by the…

Q: if you boiled a 15 g piece of metal in water (100C) then put it in a calorimeter containing 20 ml of…

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Q: 3. A coffee-cup calorimeter is used to determine the heat of reaction for the acid-base…

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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: The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid…

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Q: If the temperature of a system of one mole of an ideal gas is changed from T1°C to T2-2T1 °C is…

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Q: a system receives 75.0 joules of electric work, delivers 274.0 joules of expansion work and absorbs…

A: A system receive 75 joule of electric work amd deliver 274 joule of expansion work and it absorb 168…

Q: In an isolated system 1000 J of heat is added to an ideal monatomic gas, while the gas performs 500…

A: From data Q= +1000J (positive as it is positive in case of heat is added to system as per chemistry…

Q: Suppose a reaction is run in a water-based calorimeter of negligible heat capacity and that qwater…

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Q: If 330. Grams of an unknown substance at 200 oC are placed in a calorimeter filled with 2000. Grams…

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Q: (3) It takes 330 J of energy to raise the temperature of 24.6 g of benzene from 21.0°C to 28.7° C at…

A: Given: Total energy = 330 J Mass of benzene = 24.6 g Initial temperature = 21 °C Final temperature…

Q: A gas is allowed to expand, at constant temperature, from a volume of 1.0 L to 10.1 L against an…

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Q: change in the internal energy

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Q: A system receives 425 J of heat and delivers 425 J of work toits surroundings. What is the change in…

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Q: An ideal gas sealed in a rigid 5.87-L cylinder, initially at pressure Pi=10.10 atm, is cooled until…

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Q: A system initially at 1.50L changes its volume under an external pressure of 0.988atm while…

A: Given data:

Q: 2. A quantity of 1.922 g of methanol (CH3OH) was burned in a constant- volume bomb calorimeter.…

A: We will first calculate heat released, then enthalpy of reaction.

Q: 2- Calculate the total internal energy change (AU) for a system that loses 50 J of heat and gains…

A: According to the 1st law of thermodynamics :-      △U=q+Wwhere ,       △U=Change in internal…