A scientist measures the standard enthalpy change for the following reaction to be -967.6 kJ: 4NH3(g) + 5 O2(g)-------->4NO(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is : ___________kJ/mol

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Q: A chemist measures the enthalpy change AH during the following reaction: 2 Al(OH),(s)→ Al, O,(s) + 3…

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A: Calculation of enthalpy for the reaction is given below.

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Q: What process corresponds to the-88 kJ enthalpy change?

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Q: 3 C(s) + 4 H2 (g) --> (Q14) Find AHrxn (in kJ) for the formation of propane from its elements: C3H8…

A: When any reaction is multiplied by a common coefficient then the enthalpy of that reaction also…

Q: Part A When 1.547 g of liquid hexane (C6 H14) undergoes combustion in a bomb calorimeter, the…

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Q: [References] Use the References to access important values if needed for this question. A scientist…

A: ∆fH°(H2S,g) = -20.6 KJ/mole ∆fH°(SO2,g) = -296.8 KJ/mole  ∆fH° (O2,g) = 0 KJ/mole

Q: In a coffee-cup calorimeter, 140.0 mL of 1.2 M NaOH and 140.0 ml of 1.2 M HCI are mixed. Both…

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Q: What is the amount of heat released by the reaction when 25.0 g of sodium peroxided is reacted with…

A: Given :-  2Na2O2 (s) + 2H2O (l)  → 4NaOH (s) + O2 (g)  ∆H = -126 kJ  Mass of Na2O2 = 25.0 g  To…

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Q: 6. A 40.00 g sample of water at 22.00°C is put in a calorimeter. After 60.00 g of water at 65.00°C…

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Q: [References) In a coffee-cup calorimeter, 110.0 mL of 1.3 M NAOH and 110.0 mL of 1.3 M HCl are…

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Q: The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In…

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Q: When 1.553 g of liquid hexane (C6H14C6H14) undergoes combustion in a bomb calorimeter, the…

A: The reaction taking place can be written as (C6H14 = hexane), => C6H14 + O2 -------> CO2 + H2O…

Q: 5) The overall reaction in commercial heat packs is: AH =-1652 kJ 4 Fe (s) + 3 0, (g)→2 Fe,0, (s) A.…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -184.6 kJ :…

A: Applying standard condition of change in entropy of reaction.

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Q: The sugar arabinose, C5 H10 O5 , is burned completely in oxygen in a calorimeter. C5 H10 O5 (8) +…

A: Given information: mass of C5H10O5 = 0.528 g heat capacity (C)  = 15.0 KJ/oC Temperature  = 20.0oC…

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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: Sucrose (table sugar, C12H22O11) can be oxidized to CO2 and H2O, and the enthalpy change for the…

A: In order to calculate the enthalpy change we first write down the given data: Change in enthalpy for…

Q: 8. Instant cold packs can be made from ammonium nitrate by mixing/reacting it with water (reaction…

A: Q.8:  mass of the solution, m = solute + solvent = 1.25 g + 25.0 g = 26.25 g  specific heat capacity…

Q: Sucrose (table sugar, C12H22O11) can be oxidized to co2 and h2o, and the enthalpy change for the…

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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: The thermite reaction, Fe2O3(s) + 2 Al(s) ---->2 Fe(s) +Al2O3(s), ΔH° = -851.5 kJ/mol, is one of…

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Q: The combustion of ethanol, C2H5OH@ to form carbon dioxide gas and water. What is the enthalpy of…

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Q: standard enthalpy change

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Q: O THERMOCHEMISTRY 15 Using Hess's Law to calculate net reaction enthalpy Nitric acid can be formed…

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Q: 11. When 0.10 moles of butane, CaH10, are combusted in a bomb calorimeter, the temperature of the…

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

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Q: Methylhydrazine (CH6N2) is commonly used as a liquid rocket fuel. The combustion of methylhydrazine…

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Q: In an experiment, a 1.1250 g sample of β-D-fructose (C6H12O6) is burned completely in a bomb…

A: Answer: -2709.88 KJ/mol

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Q: When 51.4g of a metal alloy at 78.5°C are added to 112g of water at 23.8°C in a coffee - Cup…

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Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

A: qH2O  = msΔT  m  = mass of water  = 1.068*103  s = heat capacity of water = 4.184Jg-1°C-1   ΔT =…

Q: The enthalpy of combustion of methane gas, CH4(g), is about -9.0*102 kJ/mol. When methane gas reacts…

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Q: In a coffee-cup calorimeter, 110.0 mL of 1.3 M and 110.0 mL of 1.3 M are mixed. Both solutions were…

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