Consider the following reaction:2 CH3OH(g)---->2 CH4(g) + O2(g) ΔH = +252.8 kJ(a) Is this reaction exothermic or endothermic? (b) Calculatethe amount of heat transferred when 24.0 g of CH3OH(g) isdecomposed by this reaction at constant pressure. (c) For agiven sample of CH3OH, the enthalpy change during thereaction is 82.1 kJ. How many grams of methane gas areproduced? (d) How many kilojoules of heat are releasedwhen 38.5 g of CH4(g) reacts completely with O2(g) to formCH3OH(g) at constant pressure?

Q: In an insulated bomb calorimeter, 0.568 g of solid citric acid (C6H8O7, molar mass 192.12 g) was…

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Q: The value of AU for the combustion of propane, C3H8, is -185.81 kJ. What is the heat of formation of…

A: Heat of formation of propane can be calculated as given below.

Q: What is the final temperature (in oC) of a 35.5 g sample of aluminum (specific heat = 0.900 J/(g K))…

A: heat energy needed to raise temperature of 1gram of substance to 1°c  is known as specific heat of…

Q: What was the initial temperature (in oC) of a 38.13 g sample of aluminum (specific heat = 0.900 J/(g…

A: Given :-  Mass of substance = 38.13 g  Specific heat = 0.900 J/g.K  Heat  = -1.077 kJ  Final…

Q: The thermite reaction can be written as 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s)                  ΔH∘=−850kJ…

A: Given: The value of  is -850 kJ. The amount of heat released in 314.5 kJ. Introduction: According to…

Q: When 50.0 mL of 1.20 M of HCl(aq) is combined with 50.0 mL of 1.30 M of NaOH(aq) in a coffee-cup…

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Q: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N206, is burned in a bomb calorineter, the…

A: In a bomb calorimeter, heat of combustion is calculated as: q=mC∆T where m is mass, C is heat…

Q: The temperature of 756 g of water in a calorimeterincreases from 23.2°C to 37.6°C. How much heat…

A: Given: Mass = 756g Initial temperature= 23.2oC Final temperature= 37.6oC To find: The heat given off…

Q: How much heat (in kJ) is needed to raise the temperature of 100.0 grams of water by 25.0 °C?  The…

A: Mass of water(m) = 100 gm  specific heat capacity of water(s) = 4.184 J/g·°C  Increase in…

Q: 5.114 A 3.52-g sample of ammonium nitrate (NH4NO3)was added to 80.0 mL of water in a…

A: Given that : Mass of ammonium nitrate = 3.52g Mass of water = 80.0mL = 80.0g Change in temperature…

Q: In a constant-pressure calorimeter, 65.0 mL of 0.800 M H,SO, was added to 65.0 ml. of 0.500 M NaOH.…

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Q: The value of AH° for the reaction below is 128.1 kJ CH ,OH U - Co, 2(8) + 2H. 2(8) How may kJ of…

A: Given chemical equation is  CH3OH(l) -----> CO2(g) + 2H2(g) Enthalpy change, ∆H° = 128.1 kJ  We…

Q: Question attached

A: Given, The combustion reaction of Acetone- C3H6O + 4 O2 → 3 CO2 + 3 H2O  The energy of the above…

Q: The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C)…

A: In the given question we have to calculate the quantity of heat evolved in kilojoules when equal…

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Q: 9. The evaporation of water is endothermic: H2O (1) → H2O (g) AH°rxn = 44.01 kJ/mol What minimum…

A: H°rxn = 44.01 kJ / mol

Q: When 2.0 g of CaO is added to 50.0 mL of water at 25.0 °C in a calorimeter, the temperature of the…

A: The reaction taking place is given as, => CaO (s) + H2O (l) --------> Ca(OH)2 (aq) Given :…

Q: In a constant-pressure calorimeter, 50.0 mL of 0.320 M Ba(OH), was added to 50.0 mL of 0.640 M HCI.…

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Q: The heat of combustion for one mole of carbon is 394kJ, C(s)+O₂(g) + CO₂(g). How much heat would be…

A: Given information: Heat released during combustion of 1 mole of carbon is 394 kJ. The chemical…

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A: Here we are required to show the formation of aqueous sulphuric acid

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

Q: A sample of nickel is heated to 99.8°C and placed in a coffee-cup calorimeter containing 150.0 g…

A: The equation used to calculate heat released or absorbed follows:        ......(1) where, q = heat…

Q: If 50.0g of benzene, C6H6, at 25.0c absorbs 2.71kJ of energy in the form of heat, what is the final…

A: The mass of benzene is = 50.0 g The initial temperature of benzene is = 25oC The amount of heat…

Q: A 1.99 g sample of a soluble salt dissolves in 23.8 mL of water in a coffee cup calorimeter.  When…

A: Given, mass of sample of salt m = 1.99 g increase in temperature = 24.3 °C specific heat of solution…

Q: 2. What is the heat capacity of 25.0 g of ethyl alcohol if its specific heat is 2.42 J/g C?

A: Given is 25.0 g ethyl alcohol  Heat capacity  = Hc = 2.42 J/g°C Specific heat = ?

Q: 7. When 0.63 g of solid LiCI (AHsoln = – 37.1 kJ/mol) dissolves in 5 L of water, how much heat is…

A: Answer :-  Heat released (q) when 0.63 g LiCl dissolved in 5 L water = -552.8 (J) = -0.5528 (kJ)…

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

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Q: In a constant-pressure calorimeter, 75.0 mL of 0.880 M H, SO, was added to 75.0 mlL of 0.440 M NaOH.…

A: Given :  Concentration of NaOH solution  = 0.440 M  Volume of NaOH solution = 75 ml  Concentration…

Q: 1. Given that AH°,( BaSOle) = -1,473 KJ/mol, using the given table, what is standard enthalpy change…

A: Given reaction is :  Ba2+ (aq) + SO42- (aq)---------> BaSO4 (s)  Enthalpy of formation of BaSO4…

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: Consider the hypothetical thermochemical equation 3 A+ B 2 C for which AH = 59.3 kJ/mol. %3D If the…

A: Ans

Q: The heat of combustion (AH) for propane (molar mass 44.11 g/mol) is -2222 kJ/mol. The heat generated…

A: Given data Heat of combustion of propane ∆H=-2222 KJ/mol molar mass of propane = 44.11 g/mol mass of…

Q: 4. A 74.8 g sample of copper at 143.2°C is added to an insulated vessel containi 165 mL of glycerol,…

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Q: In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH), was added to 70.0 mL of 0.680 M HCI.…

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Q: What is the mass (in g) of a sample of diamond (specific heat = 0.502 J/(g K) which evolve (-8.96)…

A: We know, heat evolved, Q = ms(Tfinal - Tinitial)

Q: When a 12.5 g sample of NaOH(s) dissolves in 395.0 mL water in a coffee cup calorimeter, the…

A: Please find the solution attached as handwritten note .

Q: Write out the full thermochemical equation for the Heat of formation of AgCIO4

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Q: In walking 1 km, you use about 100 kJ of energy. Thisenergy comes from the oxidation of foods, which…

A: Given  100 kJ energy is used in 1 km walking Energy comes from oxidation of foods is 30% efficient.…

Q: During an experiment, a student adds 1.05 g of calcium metal to 200.0 mL of 0.75 M HCI. The student…

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Q: Consider the hypothetical thermochemical equation 3 A + B → 2 C for which AH = 63.1 kJ/mol. Which…

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Q: In a calorimetric experiment, 6.48 g of lithium hydroxide, LiOH, was dissolved in water. The…

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Q: Calcium carbonate can be decomposed upon applying heat with the following equation CaCO3(s)  →…

A: Calcium carbonate can be decomposed upon applying heat with the following equation: CaCO3(s)  →…

Q: How much energy, in J, is required to raise the temperature of 1 kg of water from 37oC to 39.5oC?…

A: Given, The energy, in J, is required to raise the temperature of 1 kg of water from 37oC to 39.5oC…

Q: 25. The standard molar enthalpy of formation of glucose, C,H12Os), is -1274.4 kJ/mol. a) Is the…

A: Standard molar enthalpy of formation of glucose  is the amount of heat energy released or required…

Q: In a calorimetric experiment, 6.24 g of lithium hydroxide, LIOH, was dissolved in water. The…

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Q: The temperature of 127.4 g of water rises from 18.6 °C to 30.9 °C when 0.1000 mol of H+ is reacted…

A: Mass of water, m =127.4 g Initial temperature, T1=18.6 °C Final temperature, T2=30.9 °C Temperature…

Q: NO3KNO3 is dissolved in 229 g of water at 23.00 °C.   KNO3(s)−→−−H2OK+(aq)+NO−3(aq)   The…

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

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Q: The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C)…

A: The question is based on the concept of chemical thermodynamics. first, we have to identify what is…