Suppose that the molar enthalpy of a reaction is -40.95 kJ/mol and 3.144 moles are reacted. How many kilojoules of heat are released by the reaction? Report your answer to three decimal places (ignore significant figures).

Q: (a) If 10.6 moles of water at 35°C absorbs 12.30 kJ, what is the final temperature of the water? The…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: 2C2H6 (g) + 7O2 (g) → 4CO2(g) + 6H2O (g) ΔH = -1560 kJ How much heat (in kJ) is released if 11.1 g…

A: Moles of ethane=11.1/30=0.37

Q: Suppose that the molar enthalpy of a reaction is -73.45 kJ/mol and 4.222 moles are reacted. How many…

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Q: density of water = 1.00 g/ mL The enthalpy changes when a strong acid is neutralized by strong base…

A: Given molar enthalpy of neutralization = - 56.1 kJ/mol  The thermochemical equation can be written…

Q: Use the References to access important values if needed for this question. In the laboratory a…

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Q: The number of Calories in food items were originally determined by combusting the food, and…

A: Mass of banana used = 115 g Volume of water taken = 850.0 mL Increase in temperature of water =…

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

A: Enthalpy of a reaction is the energy that liberated or consumed in the chemical reaction. For an…

Q: how many millimoles of ethanol would need to be burned to generate 8370 joules of energy? the heat…

A: Heat of combustion is defined as the heat released when 1 mole of reactant is combusted. Hence, heat…

Q: The complete combustion of a small wooden match produces approximately 512 cal of heat. How many…

A: Given, The approximate amount of heat produced by the combustion of a small wooden match = 512 cal…

Q: The reaction 3H2(g) + N2(g) → 2NH3(g) has an enthalpy of reaction of -92.6 kJ/mol. If 2 g of…

A: According to the given balanced chemical equation, one mole of nitrogen reacts to produce 92.6 kJ of…

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

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: Use the thermodynamic data in the table below to calculate how much heat in kJ is required to change…

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Q: Use the References to access important values if needed for this question. When a solid dissolves in…

A: calculate the enthalpy of dissolution of CsCl(s) in kJ/mol.

Q: A gas expands and does work on the surroundings equal to 279 J. At the same time, it absorbs 216 J…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

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: When 1.23g C6H6(l) are burned, 51.5KJ of heat are released.  Calculate the enthalpy for this…

A: Heat of formation of the compound can be calculated from the reaction and enthalpy of the reaction .…

Q: You wish to heat water to make coffee. How much heat (in joules) must be used to raise the…

A: Given- Weight of water = 0.150 kg = 150 gm (1 kg = 1000 gm) T1= 26°C  T2= 97°C Specific heat…

Q: A 76 ml solution of a dilute AGNO3 solution is added to 91 mL of a base solution in a coffee-cup…

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Q: The enthalpy change for heating a one mole sample of an ideal, monoatomic gas at 25°C is 3.75…

A: Enthalpy is the heat content of a system. The enthalpy change of a reaction is roughly equivalent to…

Q: Magnesium burns in air to produce a bright light and is often used in fireworks displays. The…

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Q: If a system has 425 kcal of work done to it, and releases 5.00×102 kJ of heat into its surroundings,…

A: Convert the unit of work done to kJ:

Q: Consider the following reaction: 2 Al (s) + Fe2O3 (s) → 2 Fe (s) + Al2O3 (s)    ΔH = -850 kJ What…

A: Given the chemical reaction as follows,2 Al (s) + Fe2O3 (s) → 2 Fe (s) + Al2O3 (s)   ;  ΔH = -850…

Q: An ideal gas ina cylinder fitted with a piston expands at constant temperature from a pressure of 6…

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Q: The energy absorbed by a certain system is -130 kj . If the system does 90kj of work on the…

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Q: A 534.2 g sample of water is subjected to a temperature change of -67.86 °C. The specific heat…

A: Given,  Mass of water in g = 534.2 g  Change in temperature = ΔT = -67.86 0C  Specific heat capacity…

Q: Consider the balanced chemical equation: 2Al(s) + Fe2O3(s) -> 2Fe(s) + Al2O3(s) heat of reaction =…

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Q: A 2.5 g sample of NH4NO3 is dissolved in 135 g of water in a Styrofoam cup, changing the temperature…

A: Data given: Mass of NH4NO3 dissolved = 2.5 g Mass of water = 135 g Initial temperature, T1 = 25.1 °C…

Q: Chargers for cell phones get warm while they are being used. Some of the energy that they are using…

A: The solution is given below -

Q: Consider the following thermochemical reaction for kerosene: 2 C12H26 (1) + 37 O2 (g) 24 CO2 (g) +…

A: The given balanced chemical equation is: 2 C12H26 (l) + 37 O2 (g)→ 24 CO2 (g) + 26 H2O (l)…

Q: the heat released for a complete reaction of 1 mole of carbon to 1 mole of carbon dioxide is 393kj.…

A: Given,  Given moles of carbon = 1 mole  Moles of CO2 = 1 mole  Amount of heat releases = 393 KJ…

Q: How many moles of H, are required to produce -4551 kJ of heat in the following reaction? N, (g) + 3…

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Q: A system receives 525 J of heat from its surroundings and delivers 465 J of work to its…

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Q: A gas sample does 214 J of work upon expanding and the cools, losing 34 J of heat. What is the total…

A: The first law of thermodynamics is given asΔU=Q−W, Δ U = Q − W , whereΔU is the change in internal…

Q: A typical room in a house contains 5.10 x 104 L of air (density = 1.29 g/L). How many moles of…

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

Q: The enthalpy change for the reaction CH,(g) + 20,(g) → CO,(g) + 2H,O(1) is - 891 kJ for the reaction…

A: The reaction given is Enthalpy change of reaction is -891 KJ.

Q: For the reaction given in Part A, how much heat is absorbed when 3.70 mol of A reacts?

A: Given: ∆fH°(A) = -233 kJ/mol ∆fH°(B) = -391 kJ/mol ∆fH°(C) = 181 kJ/mol ∆fH°(D) = -477 kJ/mol

Q: Chemical handwarmers work by using the oxidation of iron to release heat (Q).  In this reaction, the…

A: In a chemical reaction heat is released means that reaction is exothermic reaction, an enthalpy…

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: 1. Calcium carbonate decomposes at high temperatures to form carbon dioxide and calcium oxide: Given…

A: We have given that  Calcium carbonate decomposes at high temperatures to form carbon dioxide and…

Q: How many kilojoules of heat are produced when 34.0 g of Fe2O3 reacts with an excess of CO according…

A: In this question, we want to determine the value of heat produced in kJ unit. How we can determine,…

Q: The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 25.0 mL of…

A: HBr + NaOH → NaBr + H2O    First calculate the millimoles of each reactant to find the limiting…

Q: The complete combustion of propane, C3H8 (g), is represented by the following unbalanced equation…

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Q: Which statements are true? A combustion reaction is exothermic. When energy is transferred as heat…

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Q: When 2 mol of potassium chlorate crystals decompose to potassium chloride crystals and oxygen gas at…

A: A thermochemical equation for a given reaction can be defined as the balanced stoichiometric…

Q: Suppose that the molar enthalpy of a reaction is -69.06 kJ/mol and 1.134 moles are reacted. How many…

A: energy from the reaction evolved can be calculated using molar enthalpy and moles.

Q: Suppose that the molar enthalpy of a reaction is -61.27 kJ/mol and 4.799 moles are reacted. How many…

A: since we know that molar enthalpy is the enthalpy of reaction when one mole of a substance is…

Q: A 237 g sample of molybdenum metal is heated to 100.1 °C and then dropped into an insulated cup…

A: mass of Molybdenum = MMo = 237 gInitial Temperature of Molybdenum =TMo = 100.1°Cmass of water = Mw =…

Q: of

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

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: How much heat is evolved when 8.89x10° g of ammonia is produced according to the following equation?…

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