Given the thermochemical equation  2 CO2(g) → 2 CO(g) + O2(g) ΔH = 566 kJ  how much energy is absorbed when 85.2 g of CO2 are reacted?

Q: What mass of propane, C3H8, must be burned in order to produce 76,000 kJ of energy? Is this reaction…

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Q: How much heat evolves from burning 16.4 g of sulfur, Sg, in air? g S8(s) + 8 O2(g) → 8 SO2(g) AH°r=…

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Q: Sulfur dioxide gas reacts with oxygen to form sulfur trioxide in an exothermic reaction according to…

A: Given mass of SO2 = 58 g

Q: What is the change in the internal energy of a system that absorbs 2,500 J of heat and that does…

A: The given data contains, A System absorbs 2500 J of heat work =7655 J

Q: What is the change in internal energy of a system if the system (a) absorbs 58 J of heat and does 58…

A: Given information, (a) System absorbs 58 J of heat and does 58 J of work (b) System absorbs 125 J of…

Q: What is the change in internal energy

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Q: If a student performs an endothermic reaction in a calorimeter, how does the calculated value of ∆H…

A: An endothermic reaction is the one that takes in energy, overall.

Q: What is the change of internal energy in J of a system that releases 675 J of heat and has 875 J of…

A: According to first law of thermodynamics, we have : dU = q + w  ----(1) Where dU is change in…

Q: 2 X+ Y2Z3 →2 Y+ X2Z3, AH = -325 kJ/mol Given the equation above how many kilojoules of heat are…

A: Given that: 2X + Y2Z3    ----->  2Y + X2Z3     ∆H = -325 kJ/mol

Q: How much energy is absorbed by a 2.5 g substance that has a specific heat capacity of 0.58 J/g ·°C…

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Q: What is the change in internal energy when a system is heated with 35 J of energy while it does 15 J…

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A: Given, The combustion reaction of Acetone- C3H6O + 4 O2 → 3 CO2 + 3 H2O  The energy of the above…

Q: Consider the following thermochemical equation: AH = -114.1 k) 2 NO 2(9) 2NO (9) + O2(9) If 3.00 x…

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Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

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Q: How many kilojoules of heat are released when 38.2 g of CH4 (g) reacts completely with O2 (g) to…

A: mass of CH4 = 38.2 g Chemical reaction - 2CH3OH → 2CH4 + O2                H = +252.8 kJ

Q: Consider a reaction occuring in a calorimeter. The heat produced by this reaction is symbolized by…

A: A calorimeter is used for measuring the heat of a chemical reaction. In calorimeter, an exothermic…

Q: Given the thermochemical equations below, calculate the standard enthalpy change for the following…

A: EXPLANATION: Standard enthalpy change is defined as the change in enthalpy of compound when there is…

Q: If the complete reaction of 45.0 g of B(s) requires 74.93 kJ of heat to be absorbed from the…

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Q: What is the change in internal energy in joules for a system that releases 154 J of heat and does…

A: Since the relationship between work, internal energy change and heat released is given by  ΔE=…

Q: 1. How much work was done when 46 kJ of energy was spent on compressing a gas as it released 28 kJ…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.03kg sample…

A: Mass of C6H4F2 = 1.03 kg = 1030 g Molecular weight of C6H4F2 = 114.09 g/mol Number of moles of…

Q: The enthalpy change for Photosynthesis can be represented as the following thermochemical equation.…

A: Photosynthesis is the chemical process where the plant absorbs sunlight and converts into a glucose…

Q: Given the following thermochemical equation: 4NH3(g) + 502(g) Calculate the enthalpy change when…

A: Ammonia reacts with oxygen to form nitrogen oxide and water. The equation for the balanced chemical…

Q: 1)What is the specific heat if 24.8 g of a metal absorbs 275 J of energy and the temperature rises…

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Q: Unit 10 Q#17 When a 25.0 g sample of ethyl alcohol is burned, how much energy is released as heat?…

A: Given: Mass of Ethyl alcohol = 25 g ∆Hrxn = -1.37 × 103 KJ/mol That means on burning 1 mole of…

Q: Consider the hypothetical thermochemical equation 3 A+ B 2 C for which AH = 59.3 kJ/mol. %3D If the…

A: Ans

Q: 49. When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of…

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Q: 3. A sample of aluminum with a mass of 53.4 g is initially at 156 ° C. What is the temperature of…

A: "Since you have asked multiple question, I will solve the first question for you. If you want any…

Q: How many milliliters of water at 31 °C with a density of 1.00 g/mL must be mixed with 95.0 mL (about…

A: Given: Initial temperature of water=31 degree celciusdensity =1.00g/mlvolume of coffee(m2)=95…

Q: A system suffers an increase in internal energy of 80 J and at the same time has 50 J of work done…

A: Given : Increase in internal energy ( U ) = +80 J Work done on the system ( W ) = +50 J Heat change…

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: CH4 + 202 → CO₂ + 2H₂O AH-890kJ/mol How much heat is released when 2.7 g of methane gas is burned in…

A: Here we are required to find heat released when 2.7 gm of methane is burnt

Q: If a student performs an endothermic reaction in a calorimeter, how does the calculated value of ΔH…

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Q: Methanol is used to heat food. The combustion of methanol can be described by the following…

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Q: 4.51 g of octane, C8H18, reacts with excess oxygen in a bomb calorimeter. The heat capacity of the…

A: Given data,The mass of Octane is 4.51gThe heat capacity of the calorimeter is 6.97 kJ/°CThe…

Q: Consider the following thermochemical equation: 2 NO, 2NO, AH = -114.1 kJ 02(g) (g) 2(9) Choose...…

A: 2NOg    +     O2g       →      2NO2g ∆H = -114.1kJ Molar mass of NO2 = 46gmol

Q: How much heat is released by a system when 45 J of work is done on it to decrease its energy to 23…

A: The objective of the question is to calculate the heat released by the system when : Work done (∆W)…

Q: .A substance increases in temperature by 55°C when a 98 g sample of it absorbs 80000 J of h What is…

A: The amount of heat needed to change a unit mass of a material by one degree Celsius is known as…

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A: According to 1st law of thermodynamics  Change in internal energy= Q-W Q= heat added to the system…

Q: The combustion of methane is described by the following balanced chemical equation. CH4(g) + 2O2(g)…

A: Given : Enthalpy change of reaction ∆ H = - 34.5 kj We need to find if reaction is exothermic Or…

Q: When 1.42 g of iron reacts with 1.80 g of chlorine, 3.22 g of FeCl2(s) and 8.60 kJ of heat is…

A: Iron reacts with chlorine to form iron(II) chloride. When 3.22 g of FeCl2s is formed, 8.60 kJ of…

Q: When N2(g) reacts with H2(g) to form NH3(g) , 92.2 kJ of energy are evolved for each mole of N2(g)…

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Q: A gas expands and does work on the surroundings equal to 4.92 L atm. At the same time, it releases…

A: Given: Work done (W) = 4.92 L atm Heat released by the system according to sign convention (q) = -…

Q: What is the change in enthalpy in kilojoules when 3.24 g of CH,OH is completely reacted according to…

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Q: If a system is given 60 J of heat and lifts the lid of the container 3 m with a force of 5 N, what…

A: Applying first law of thermodynamics and work done by system  ∆U = Q-w  &  W= F×r

Q: Combustion of hexane, c6h12, to carbon dioxide gas and water, releases 3923.9 KJ of heat. What is…

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Q: When N2(g) react with O2(g) to form N20(g) according to the following equation, energy is absorbed…

A: If any system absorb heat then system has profit of energy or it requires energy to complete the…

Q: When methanol, CH3OH,CH3OH, is burned in the presence of oxygen gas, O2,O2, a large amount of heat…

A: The combustion of methanol is given below.

Q: A chemist measures the energy change AH during the following reactio 2 NO,(9) → N,O4(g) AH=55.3 kJ…

A: Given mass on NO2 = 11.8 gram Molar mass of NO2 = 46.0055 g/mol Therefore, moles of NO2 =…

Q: Given the following thermochemical equation: 4NH3(g) + 502(g) → 4NO(g) + 6H20(g) AH = -906 kJ…

A: Ammonia reacts with oxygen to form nitrogen oxide and water. The equation for the balanced chemical…