When gasoline burns in an automobile engine, the heat released (325 J) causes the products CO2 and H2O to expand, which pushes the pistons outward. Excess heat is removed by the car’s cooling system. If the work associated with the expanding gases is equal to 451 J, how much is the change in internal energy of the gases? How much is the change in 2. internal energy of the piston?

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 191. kJ during a…

A: The enthalpy change of the given reaction is = -191. kJ The work done by the gas mixture is =-63. kJ…

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…

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Q: Consider the combustion of isobutane (C4H10; 58.123 g/mol; ΔH°comb = -2849.7 kJ/mol) in excess…

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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: 2C8H18(l) + 25 O2(g) = 16CO2 (g) + 18H2O(l) H rxn= -11,020 kJ if 2 moles of octane react, how much…

A: The reaction :2C8H18(l) + 25 O2(g)  16CO2 (g) + 18H2O(l)

Q: 8. 66.80 g of lead is heated to 155°C and then placed into a foam cup calorimeter containing 70.0 mL…

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

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.24 kg sample…

A: Given: Mass of sample : 0.24 kg Initial temperature = 33.8oC Final temperature = 43.9oC Heat needed…

Q: 5) When 45.0mL of 1.20M sulfuric acid (H2SO4) are added to 130.0mL of 1.00M sodium hydroxide, the…

A: 5. Given:…

Q: A gas is compressed from an initial volume of 5.55 L to a finalvolume of 1.22 L by an external…

A: The expression for the work done,  W=-P(Vf-Vi)W=-1.00 atm (1.22 L-5.55 L)W=4.33 L (101.33 J)1 L…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 225. kJ during a…

A: a.) To Calculate the change in energy of the gas mixture , we would use first law of thermodynamics.…

Q: A piston performs work of 217 L atm on the surroundings, while the cylinder in which it p,aces…

A: Record the given data,   Work done w = 217 L atm   Piston expands from 8L to 24 L.

Q: In the laboratory a "cefee cup calerimer, or constant pressure calorimeter, in frequently und to…

A: Mass of Zn = MZn= 69.1 gInitial temperature of Zn = Tzn = 98.40°CMass of water = M = 82.88 gInitial…

Q: A researcher studying the nutritional value of a new candy places a 4.10 g sample of the candy…

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Q: A 36.0 g sample of an unknown metal at 99.0 °C was placed in a constant-pressure calorimeter…

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 126. kJ during a…

A: Solution                                          Given that  Enthalpy is decreased = 126 kj Work…

Q: air in an inflated balloon (system) is warmed and absorbes 665. J of heat the surroundings also…

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Q: 150.0 mL of 0.500 M hydrochloric acid is mixed with 350.0 mL of 0.150 M barium hydroxide in acoffee…

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Q: p[hysical chemistry A 50.0 mL of 0.700 M copper (II) sulfate solution is added to a 50.00 mL of…

A: Given,  CuSO4 (aq) + 2 NaOH (aq) -----> Cu(OH)2 (s) + Na2SO4 (aq) A 50.0 mL of 0.700 M copper…

Q: Is enthalpy change an extenive or intensive property? What impact does this have on the quality of a…

A: The enthalpy of a system is nothing but the sum of internal energies of the system and its…

Q: A 1.211 g of benzoic acid (CH§ COOH) was ignited in pure oxygen gas and the heat released from the…

A: Here's a step-by-step explanation:1. **Understanding the System**: We have benzoic acid (C6H5COOH)…

Q: Air in an inflated balloon (system) is cooled and loses 203. J of heat. The surroundings also…

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Q: Part A A 50.0-mL sample of a 1.00 M solution of is mixed with 50.0 mL of 2.00 M KOH in a…

A:

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 385. kJ during a…

A: We have to calculate the change in enthalpy and nature of reaction.

Q: A system conducts 255 cal of heat to the surroundings whiledelivering 428 cal of work. What is the…

A: Internal energy is the energy present within the system which rises up when molecular motion takes…

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: a 22.01 g piece of unknown metal is heated to 100C and placed into a coffee cup calorimeter…

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Q: The heat of neutralization example: A 275 mL of a 0.500 M HCl was mixed with 275 mL of a 0.500 M…

A:

Q: None

A: Enthalpy Change Calculation:Enthalpy change (ΔH) is the sum of the energy change (ΔE) and the work…

Q: The standard heat of formation for NO2 is 33.2kJmol. How much energy is required to form 810.0 g of…

A: Given : The standard heat of formation for NO2 is 33.2kJ/molWhich implies that 33.2 KJ of heat is…

Q: Three metal cylinders – one piece of iron, one piece of copper, and one piece ofaluminum – are…

A: Since heat capacity = specific heat capacity X mass  Specific heat capacities of metal are (using…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 249. kJ during a…

A:

Q: A 1.547 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

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Q: When 60.0 mL of a 0.400 M solution of HNO3 (aq) is combined with 60.0 mL of a 0.400 M solution of…

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 206. kJ during a…

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 140. kJ during a…

A: Enthalpy of a mixture of gaseous reactants increases by 140. KJ  It means enthalpy change (∆H) = +…

Q: a b C d

A: Given: The internal energy change = -200 J For moving from c to d, required heat, Qcd = 180 J For…

Q: 1. When gasoline burns in an automobile engine, the heat released (325 J) causes the products CO,…

A: