A scientist measures the standard enthalpy change for the following reaction to be 11.0 kJ :Ca(OH)2(aq) + 2 HCl(aq)CaCl2(s) + 2 H2O(l)Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of Ca(OH)2(aq) is ________  kJ/mol.

Q: The combustion of diborane, B2H6B2H6 at constant pressure, proceeds according to the equation…

A: The given chemical reaction is as follows: B2H6(g) + 3O2(g) → B2O3(s) + 3H2O(l)…

Q: JII, Il J of heat from its surroundings and has 0.65 kJ of P-V work done on it by dbSorbs 824 its…

A: (a) Balanced chemical equation of a reaction is written according to law of conservation of mass.…

Q: Under certain nonstandard conditions, the oxidation of 1 mol of SO2(g) to SO3(g) by O2(g) absorbs…

A: We have to calculate the enthalpy of formation of SO2 .

Q: 3. When 0.050 mol of HCl is reactd with 0.050 mol of NaOH in 50.0 mL of water, the temperature of…

A: The heat of a system can be given as :

Q: A scientist measures the standard enthalpy change for the following reaction to be -17.2 kJ :…

A: Given- Reaction Ca(OH)2(aq) + 2 HCl (aq)  → CaCl2(s) + 2 H2O(l) ∆H°rxn = -17.2 kJ To find- ∆H°fHCl…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (CGH1206) liberates 2820 kJ of heat. If 1.67 g…

A:

Q: The

A: We will calculate ∆H°formation .

Q: The following equation represents the combustion of ethylene glycol, (CH2OH)2 (CH2OH)2 (l) + 2.5O2…

A:

Q: Determine the mass of CO2 produced by burning enough of octane to produce 1.00×10^2kJ of heat.…

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

Q: the standard enthalpy of formation of HCl(aq)  is  kJ/mol.

A:

Q: In the laboratory a student burns a 0.398-g sample of decanoic acid (C10H2002) in a bomb calorimeter…

A: A bomb calorimeter is an instrument which is used to determine whether the reaction is endothermic…

Q: Consider the combustion of liquid C₅H₈ in oxygen gas to produce carbon dioxide gas and water vapor.…

A: Given the experimental value of standard enthalpy of formation of C5H8 = 133 kJ/mol. Literature…

Q: The enthalpy change for the oxidation of butane, C4H10, is measured by calorimetry. C4H10 (g) + 13/2…

A:

Q: In a calorimeter, 1.80 g of NH&NO%0) (80.04 gmol') is mixed with 74.0 g of water at an initial…

A: Given data,Mass of NH4NO3=1.80gMass of water=74.0gInitial temperature=25oCFinal…

Q: Part A) Use standard enthalpies of formation to calculate the standard change in enthalpy for the…

A: The standard enthalpy of formation is the enthalpy of formation measured under the standard…

Q: Consider the following reaction: NacI (s) - Na* (aq) + Cl" (ag) AH = In a coffee-cup calorimeter you…

A: Initial temperature of solution Ti = 26.4 °C Final temperature of solution Tf = 24.1 °C Change in…

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

A: Mass of ammonium bromide = 7.86 g  Mass of water = 118.0 g

Q: A student places 50.0 mL of 1.00 M HCI and 50.0 mL of 1.00 M NaOH solutions, both at 25.5°C in a…

A: Thermochemical reaction is one that indicates the reactants and products involved in a reaction…

Q: 1. Coal gasification converts coal into a combustible mixture of carbon monoxide and hydrogen,…

A: We know enthalpy is a state function that means depend on initial and final position . It is also…

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

A: Mass of CaCl2 dissolved = 2.02 gmass of water = 114 g = MInitial temperature of water = 23.70°CFinal…

Q: A scientist measures the standard enthalpy change for the following reaction to be 4.4 k) : Fe(s) +…

A:

Q: A scientist measures the standard enthalpy change for the following reaction to be -967.6 kJ:…

A: Given: The reaction is as follows: 4NH3(g) + 5 O2(g)-------->4NO(g) + 6 H2O(g) The standard…

Q: When a solid dissolves in water, the solution may become hotter or colder. The dissolution enthalpy…

A: Since your question has multiple parts, we will answer the first question for you. If you want…

Q: 6. A student is determining the enthalpy of solution for ammonium nitrate by adding ammonium nitrate…

A: We have find out the answer.

Q: The enthalpy change for the oxidation of butane, C,H10, is measured by calorimetry. C,H10 (g) +13/2…

A:

Q: A coffee-cup calorimetry experiment was performed to determine the heat of neutralization for the…

A: Enthalpy (heat) of neutralization: The amount of heat released when one mole of hydrogen ions, H +…

Q: 2) If 1mol of gaseous carbon dioxide and 2mol of gaseous sulfur dioxide are produced when 1mol of…

A: Given,  1 mol of gaseous carbon dioxide react with 2 mole of gaseous sulfur dioxide to form 1mole of…

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

A: The amount of thermal energy transferred when given K2SO4 dissolves is as follows,The total mass of…

Q: When a 4.25-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup…

A: Coffee-cup calorimeter: The heat absorbed by the solution is equal to the heat of the solution. The…

Q: When a piece of unknown metal weighing 15.20 grams, and at a temperature of 57.10 °C, is placed in a…

A: Considering the specific heat capacity of the unknown metal as x, and knowing that, loss of heat by…

Q: A scientist measures the standard enthalpy change for the following reaction to be -891.8 kJ :…

A: A) ΔHrxn= (Hf )products - (Hf )reactants   Hf NH3 = -45.90 kJ/mol (2mol) Hf N2O = x kJ/mol (3mol) Hf…

Q: In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NAOH were added to…

A: Given: Mass of NaOH solution = 112.9 g. Mass of HCl solution = 129.1 g. concentration of NaOH =…

Q: Solid aluminum metal and gaseous oxygen combine in the reaction below to form aluminum oxide:…

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Q: Glycine, C2H5O2N, is important for biological energy. The combustion reaction of glycine is given by…

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Q: A metal pellet with a mass of 100.0 g, originally at 116°C, is dropped into a cup of water,…

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Q: Calculate the standard enthalpy for the reaction  1/2N2(g) + 1/2O2(g) -> NO (g) given the…

A:

Q: RMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat If 1.75 g of…

A: Mass of water = 957 g Mass of glucose = 1.75 g Molar mass of glucose = 180g/mol Change in…

Q: 3. Define calorimetry and describe the two commonly used calorimeters. 4. When a 1.50 g sample of…

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Q: Ethylene glycol, HOCH2 CH,OH, is used as antifreeze. It is produced from ethylene oxide, C2H4O, by…

A:

Q: The efficient design of chemical plants depends on the designer's ability to access and use the heat…

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Q: initial temperature of the water was 20.5ºC, and the final temperature of the metal and water was…

A: Heat (q) = ms.□T Where  m = mass of substance  s =specific Heat capacity  □T = Temperature…

Q: A scientist measures the standard enthalpy change for the following reaction to be -19.2 kJ: Ca(OH)2…

A: Given: ∆Hf° (CaCl2(s)) = -795.8 kJ/mol ∆Hf° (H2O(l)) = -285.8 kJ/mol ∆Hf° (Ca(OH)2(aq)) = -1002.8…

Q: A scientist measures the standard enthalpy change for the following reaction to be -901.4 kJ:…

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Q: Combustion of a hydrocarbon, X, is given by the equation: 2 X + 5 O2 (g) --> 4 CO2 (g) + 6 H2O (g)…

A:

Q: When a 4.31 g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of…

A: Gdhh

Q: [Reférénces] When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure…

A: Given that: Mass of CaCl2(m) = 23.6g Initial temperature(T1) = 25.0°C Final temperature(T2) = 38.7°C…

Q: Instant cold packs can be made from ammonium nitrate by mixing/reacting it with water (reaction…

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Q: the standard enthalpy change for the following reaction to be -912.5 kJ: 2NH3(g) + 3 N2O(g)4N2(g) +…

A: Enthalpy of a system is defined as sum of internal energy and its additional pressure volume energy.…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A:

Q: When a piece of unknown metal weighing 34.70 grams, and at a temperature of 67.60 °C, is placed in a…

A: