Hydrogen sulfide, H2S, is a foul-smelling gas. It burns to form sulfur dioxide.  Calculate the enthalpy change to burn 27.4 g of hydrogen sulfide. 2H2S(g) + 3O2(g) à 2SO2(g) + 2H2O(g); ΔH = -1036 kJ

Q: Gas grills and fireplaces burn propane as fuel according to the following balanced combustion…

A: The given reaction is : C3H8(g)  +  5O2(g)  →  3CO2(g)  +  4H2O(g)             ΔH°rxn=−2043.8 kJ The…

Q: A scientist measures the standard enthalpy change for the following reaction to be 74.8 kJ: 2HBr(g)…

A: Enthalpy of formation is the enthalpy change during the formation of one mole of the compound from…

Q: Methanol, CH3OH, boils at 65°C. What is the enthalpy change during the process in which 16.0 g of…

A: Mass of liquid methanol    = 16 g specific heat of methanol  = 2.53Jg oC

Q: what is the heat evolved

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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: O (s) AH° = -635 kJ/mol. %3D py (in kJ/mol) for the read P2 (g)?

A: We need to first, reverse the ( 1 ) equation  CaO(s) ------> Ca(s) + 1/2O2(g) ....(3) Sign of ∆H°…

Q: A chemist measures the enthalpy change AH during the following reaction: 3 N2(g) + 8 H,(9g)–4 NH3(g)…

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Q: Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product…

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Q: Given the following thermochemical data: HNO3(aq)+Ag(s) → AgNO3(aq)+½H2(g)   ΔH = 105.0 kJ…

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Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

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Q: In the following experiment, a coffee-cup calorimeter containing 100 mLmL of H2OH2O is used. The…

A: Heat of solution of calcium chloride = -82.8 kJ/mol which means one mole of calcium chloride on…

Q: the thermo-chemical equations shown below to determine the entha N₂(g) + 3H₂(g)=>2NH3(g) AH = ?…

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

A: Required amount of reactant calculation to produce given amount of heat using the given value of…

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

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Q: To make the perfect cup (approximately 252.6 mL) of hot chocolate, you are searching for a…

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Q: 3) Use the standard reaction enthalpies given below to determine AHD rxn reaction 2 NO(g) + O2(g) →…

A: Concept of Hess' law:It states that the change of enthalpy in a chemical reaction  is not dependent…

Q: 2) Methanol is known to be the simplest alcohol, and is used as an antifreeze agent, a solvent, a…

A: Hess's law of constant heat summation :-  The law states that, the change in enthalpy for a reaction…

Q: 02(g)→2N2 (9) + 6H20(9), AH = py change to burn 24.6 g of ammonia?

A: Given, Mass of NH3 = 24.6 g  Molar mass of NH3 = 17 g/mol Moles = mass/molar mass   = 24.6/17 = 1.45…

Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: Given reactions: A) H₂ (g) + F₂ (g) → 2 HF (g) B) Ca (s) + ½ O₂ (g) → CaO (s) C) 2 CH₃OH (l) +…

Q: You are given the following related reactions and the corresponding enthalpy changes. 1. 2C0+ 0₂ (g)…

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Q: Methane (CHA) burns in oxygen via the following reaction: CHa(g) + 202(8) > CO2(8) + 2H20(g) ; AH=…

A: The amount of energy absorbed or released in a chemical reaction is known as enthalpy of the…

Q: Methanol, CH3OH, is a possible fuel for automobiles. Energy is evolved in its combustion with…

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Q: The heat capacity of a calorimeter is given as 1264 J/oC.   Suppose the enthalpy of solution for…

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Q: Enthalpy is the energy absorbed or released when a chemical change occurs. Assume you have the…

A: Heat evolved when, 1 mole of the substance is completely burnt in presence of oxygen is known as…

Q: 5. Calculate the standard enthalpy of formation (in kJ mol) for cyclopentane gas, CsH10(g), using…

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Q: ΔH

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Q: which is the correct enthalpy of formation reaction for nitrogen monoxide gas?

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Q: During a reaction, the temperature of the solution in a coffee cup calorimeter increased by 8.6…

A: Heat of reaction (qreaction ) is given by the formula  q = ms(dT) where m = mass of sample s =…

Q: When 2.25 grams of zinc reacts with 75.0 mL of 0.500 M HCl(aq), 5.63 kJ of heat are produced.…

A: The given data - The mass of Zinc = 2.25 The volume of HCl = 75.0 mL The molarity of the HCl = 0.500…

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Q: H2O(g)is −241.82kJ/mol The standard enthalpy of formation for CO2(g)is −393.5kJ/mol The standard…

A: Given data is The standard enthalpy of formation for H2O (g)is −241.82 kJ/mol The standard enthalpy…

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: Which balanced thermochemical equation corresponds to the standard enthalpy of formation (AHO) of…

A: The enthalpy of formation is the amount of energy released or absorbed during the formation of one…

Q: Tetrachloromethane, CC14, is formed from methane and chlorine in the following reaction: CH4 (g) + 4…

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Q: Is the dissolving of ammonium chloride an endothermic or exothermic process?

A: From the above data we are supposed to find whether it is a endothermic or an exothermic reaction…

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A: Enthalpy of fornation :-  The enthalpy change involved in the formation of 1 mole of a compound from…

Q: Chlorine Tri fluoride is a toxic intensely reactive gas.  It was used in WWII to make incendiary…

A: It is an exothermic reaction having ∆H as negative value and 1196 kJ of heat is evolved.

Q: nearly odorless, but the commercial product smells vile. Carbon disulfide is used in the manufacture…

A: Form given data , calculate the standard enthalpy change for given reaction :

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

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

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Q: Use only 1 decimal for the Final answers. From the following enthalpies of reaction: 4 HCl(g) +…

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Q: Hydrogen sulfide, H2S, is a foul-smelling gas. It burns to form sulfur dioxide.  Calculate the…

A: The problem is asking us to calculate the enthalpy change when 27.4 g of hydrogen sulfide (H2S) is…

Q: A scientist measures the standard enthalpy change for the following reaction to be - 778.8 kJ:…

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Q: Consider the thermochemical equation for the combustion of acetone (C3H6O), the main ingredient in…

A: Recall the given reaction,                              C3H6O l + 4 O2 g → 3 CO2 g + 3 H2O g…