Consider the followin thermochemical equation: 2NH3 (g) + 6H2O (g) -> 1/2 N2 (g) + 9H2 + 5/2 O2 (g) + NO (g)   ΔHrxn° =? What is the  ΔHrxn° (in kcal) given the following thermochemical data? N2 (g) + O2 (g) -> 2NO (g)  ΔH° = 43.20 kcal N2 (g) + 3H2 (g) -> 2NH3 (g)  ΔH° =-22.10 kcal 2H2 (g) + O2 (g) -> 2H2O  ΔH° =-115.60 kcal

Q: Given the following thermochemical equations, AH° = -1132 kJ 4NH3(g) + 702(g) → 4NO2(g) + 6H2O(3)…

A: To calculate the ∆Ho for the given reaction , by using the given ∆Ho for above two reactions , we…

Q: How much heat (in joules) is used to heat an 80.88-gram sample of iron from 3.59 °C to 100 °C if the…

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Q: What is the ΔE in units joules for a system releasing 428 calories of heat its surroundings and has…

A: a system releasing 428 calories of heat its surroundings and has 1255 J of work done on the system

Q: A gas in a system has a constant pressure. The surroundings around the system lose 62 joules (j) of…

A: Internal energy may be defined as the total amount of energy present within a substance and it is…

Q: For the following thermochemical equation, CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)        ΔH = –890 kJ…

A: Given reaction: CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l). ∆H = -890 kJ. So, 890 kJ of heat is released…

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (1) + 302(g) →…

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Q: Given the thermochemical equation, calculate the heat evolved (in kJ) when 118 g of SO2 (molar mass…

A: Given: The thermochemical reaction is as follows: 2SO2  +  O2 ------> SO3              H=-198…

Q: A chemical reaction occurs and 64.7 cal is transferred to the system. How many joules is this? is…

A: We have to predict nature of reaction and heat in joules.

Q: How much heat is produced by the complete combustion of 264 gg of CH4CH4?

A: Given:CH4g+2O2g→CO2g+2 H2Og∆Hrxn°=-802.3 kJ

Q: What is the enthalpy, dH, when 176.1 g NiO reacts with unlimited sulfur dioxide in the following…

A: A numerical problem based on thermochemical reaction, which is to be accomplished.

Q: Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and…

A: Enthalpy of reaction (∆ Hrxn): The difference in the enthalpies of reactants and products.

Q: 2NaHSO4(s)  ----> Na2SO4(s)  + H2O(g) + SO3(g)   ΔH = -231.3 kJ If 3.60 grams of Na2SO4(s) is…

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Q: (a) Calculate the kinetic energy, in joules of a 1200-kg automobilemoving at 18 m/s. (b) Convert…

A: a) The KE of the above process is given as the formula would be :     Ev=12mv2     we are given…

Q: A metal is thought to be silver or iron. When 8.0 g of the metalabsorbs 23.50 J, its temperature…

A: (a) q = ms∆T 23.50 = 8.0 x s x ( 6.5 0 s = 0.45 J/g °C   (b) metal will be iron.

Q: 3. How much heat (in kJ) is required to heat this kettle from 23°C to 99°C contains 1.25 L of water…

A: We have to calculate heat required to heat kettle from 23°C to 99°C, having 1..25L water

Q: If a system has 475 kcal475 kcal of work done to it, and releases 5.00×102 kJ5.00×102 kJ of heat…

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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: 1) The three combustion reactions are: C(s, gr) + O>(g) --> CO,(g) AH =-393.50 kJ H,(g) + ½0,(g)…

A: Solution:    The change in enthalpy of formation is the enthalpy change when the formation of one…

Q: A 1533 kg car is traveling down the road at 99.0 km/h. While traveling at this rate of speed, what…

A: Here we use the formula of kinetic energy K.E = 1/2 m* V^2 Where m = mass of car = 1533 kg V =…

Q: When 129.0 g of 0.200 M NaCl(aq) at 22.0 °C is added to 212.0 g of 0.100 M AgNO3(aq) at 22.0 °C in a…

A: Answer is explained below.  Given that, mass of NaCl = 129.0 g and mass of AgNO3 = 212.0 g.  Due to…

Q: Calorimeter mass  162.2 g Mass of calorimeter + cold water 226.6 g Initial temperature of cold water…

A: Note - Since you have posted a question with multiple sub-parts, we are bound to solve only the…

Q: q= 4.184 heat energy in joules. Use the formula: q=(m)(c)(ΔT) where m=mass of water being heated in…

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Q: A 300 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by…

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Q: Calorimeter mass  162.2 g Mass of calorimeter + cold water 226.6 g Initial temperature of cold water…

A: Mass of calorimeter = 162.2 g Mass of calorimeter + cold water = 226.6 g Mass of cold water = 64.4g…

Q: When 50.0 g of 0.200 M NaCl(ag) at 24.1 °C is added to 100.0 g of 0.100 M A9NO3(aq) at 24.1 °C in a…

A: Given: 0.200 M NaCl         mass  of NaCl =50. 0 gram         specific heat = 4.20 J/g C   find:…

Q: C3H8 (g)  +     O2 (g)  ->    CO2 (g)  +  H2O (l)     DH  =  -2220 kJ    How much heat, in kJ, is…

A: Heat is evolved by the complete combustion of 1.100g C3H8, (g) for the following reaction  C3H8 (g)…

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

A: A numerical problem based on the heat energy released, which is to be accomplished.

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: The specific heat capacity of a substance is defined as the amount of energy needed to increase the…

A: Hey, since there are multiple questions posted, we will answer first question. Thus, first question…

Q: Given the following reaction: 2 N2H4(g) + N2O4 → 3 N2(g) + 4 H2(g) ∆H = -1049 kJ mol-1 (a) Write…

A: Given: Reaction To find: a) Thermochemical equation for 1 mol b) Thermochemical equation for reverse…

Q: 1. How many KJ are used by a 154lb adult while sleeping for one hour? 2. In the specific heat…

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Q: In which of the following process is energy (a) Cl- CI' +e (b) HCI - H*+ C (c) CI +e+ C ted (d) 0…

A: Ionisation energy/ Potential is the amount of energy required to remove an electron from outermost…

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 in the presence of oxygen can be expressed by the following chemical…

Q: en the thermochemical equation : O2(g) + O₂(g) Ⓡ2SO3(g), DH rxn= -198 kJ/mol, w much heat is evolved…

A: Given: 2SO2(g)+O2(g)→2SO3(g)   ∆Horxn=-198 kJ/mol Mass of SO2 is 600 g To find: Heat evolved

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: Propane, C3H8 (approximate molar mass = 44 g/mol) is used in gas barbeques and burns according to…

A: Given: Combustion reaction of propane (C3H8) as follows: C3H8 (g) + 5 O2 (g) → 3CO2 (g) + 4H2O (g)…

Q: Octane (C8H18) is a component of gasoline that burns according to the following equation:…

A: the enthlpy change during the combustion of 1 mole of the substance is known as enthalpy of…

Q: Methane burns with oxygen to produce carbon dioxide and water as a gas. The balanced thermochemical…

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Q: The following thermochemical equation is for the reaction of sodium(s) with water(l) to form sodium…

A: The balanced reaction taking place is given as, => 2 Na (s) + 2 H2O (l) --------> 2 NaOH (aq)…

Q: Q9 a)The following thermochemical equation is for the reaction of hydrogen bromide(g) to form…

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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: Given reaction:

Q: 35 g of aluminum (specific heat 0.88 J/g °C) at 24 °C are placed in 180 mL (180 g) of coffee at 85…

A: Given :         Mass of Aluminium = 35 g          Specific heat = c = 0.88 J/g0C…

Q: Consider the following reaction: N₂ (g) + 2H₂ (g) = N₂H4 AH = -276 kJ

A: Given: N2(g) + 2H2 (g) ⇌ N2H4 ∆H = -276 kJ The objective is to predict the equilibrium shift

Q: Which of the following equations is a mathematical definition of enthalpy? Ο ΔΗ- ΔΕ-ΡAV Ο ΔΗ-ΔΕ +…

A: Amount or quantity of heat absorbed or released during a thermodynamic process at a fixed value of…

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

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

A: Given: mass of methanol =22.9 g           mass of oxygen = 35.6 g To find: the Amount of heat…

Q: Vanillin is a natural constituent of vanilla that is also manufactured for use in artificial vanilla…

A: Given the mass of vanillin taken for combustion = 1.013 g Since the temperature of the calorimeter…

Q: As a gas expands, it absorbs 225 J of heat and does 243 J of work to the outside. Accordingly, the…

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Q: When a mole of gaseous propane (C3H8) reacts completely with oxygen gas, 2044kj of energy is formed,…

A: One mole of gaseous propane reacts completely with oxygen forming CO2(g), H2O and release 2044 KJ of…

Q: 2 NO(g) + 02(g) → 2 NO2(g) AH°rxn = ? Given: N2(g) + 02(g) → 2 NO(g) AH°rxn = +183 kJ 1/2 N2(g) +…

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