From the data below, calculate the total heat (in J) needed to convert 0.322 mol of gaseous ethanol at 300.0°C and 1 atm to liquid ethanol at 25.0°C and 1 atm: AH vap b.p. at 1 atm: 78.5°C : 40.5 kJ/mol Cgas: 1.43 J/g.°C Cliquid: 2.45 J/g.°C

Q: A 0.550 g0.550 g sample of steam at 103.2 ∘C103.2⁢ ∘C is condensed into a container with 4.67 g4.67…

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Q: What amount of heat (in kJ) is required to convert 24.2 g of an unknown liquid (MM = 83.21 g/mol) at…

A: Given:-Mass of unknown liquid =24.2 gMM = 83.21 g/molInitial temperature = 19.2° CFinal temperature…

Q: What amount of heat (in kJ), is required to convert 10.1 g of an unknown liquid (MM = 67.44 g/mol)…

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Q: 6. How much heat is required to raise the temperature of 215 g of liquid CH3OH from 20.0°C to 30.0°C…

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Q: Using the provided data, calculate the amount of heat, in kJ, required to warm 27.3 g of solid…

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Q: What amount of heat(in KJ) is required to convert 15.5G of an unknown liquiq(MM=83.21g/mol) at 12.9…

A: Given information: Mass of given compound = 15.5 g Molar mass of given compound = 83.21 g/mol…

Q: A 0.790-g piece of lithium metal is dropped into a mixture of 50.0 g water and 50.0 g ice, both at…

A: The relation of heat energy, mass, heat capacity and change in temperature can be given as…

Q: Using the following data shown below for the heating curve and calculate the total amount of heat…

A: The specific heat capacity is defined as the amount of heat energy needed to raise the temperature…

Q: For mercury m.p. -39 degrees C                         b.p. 357 degrees C Heat of fusion 11.6 J/g @…

A: The amount of heat released in conversion of 20.0g of mercury vapor at 387degrees Celsius to liquid…

Q: The following information is given for silicon at 1 atm: = 2355.00°C   (2355.00°C) = J/g =…

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Q: Determine the total amount of heat released (in kJ) when 413 g of isopropyl alcohol (C3H3O) are…

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Q: What amount of heat (in kJ) is required to convert 10.1 g of an unknown liquid (MM = 83.21 g/mol) at…

A: Given: Mass of unknown liquid = 10.1 g Initial Temperature =19.2 °C  Final Temperature = 93.5 °C…

Q: A 118.1 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C.…

A: The question is based on the application of Hess law. it states that Net energy change for process…

Q: The graph shows a heat curve for an unidentified substance discovered by the Mars rover. What is…

A: We can determine Fusion temperature ( melting or freezing point ) and vaporization temperature from…

Q: How much energy in kilojoules is released when 23.3 g of ethanol vapor at 84.0 °C is cooled to -17.0…

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Q: A 0.503 g sample of steam at 106.7 °C is condensed into a container with 5.52 g of water at 16.9 °C.…

A: We know that,  q = mC∆T Where, q = heat m = mass C = specific heat ∆T = change in temp = Tinitial -…

Q: What amount of heat (in kJ) is required to convert 18.3 g of an unknown liquid (MM = 67.44 g/mol) at…

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Q: What amount of heat (in kJ) is required to convert 19.3 g of an unknown liquid (MM = 67.44 g/mol) at…

A: Here , heat is used in three steps , 1)  in rising of temperature of liquid till boiling point. 2)…

Q: At a pressure of 1 atm, CO2 sublimes (changes directly from solid to gas) at -78°C. a. At 1 atm,…

A: Given :  Mass of CO2 = 2.20 gm  molar mass of CO2 = 44 gm/mol  Pressure  = 1 atm  Initial…

Q: How much energy in kilojoules is released when 25.0 g of ethanol vapor at 93.0°C is cooled to…

A: 43) A mole of substance weighs its molar mass and contain avagadro number of particle  Let the mass…

Q: 11.4 If 42.0 k of heat is added to a 32.0-g sample of liquid meth- ane under 1 atm of pressure at a…

A: GivenThe total heat transferred = 42.0kJPressure= 1 atmMass= 32.0gT= -170 °Cc1= 3.48 J/gKc2=…

Q: .5000 moles of steam at 200 degrees celsius was chilled in a ultra low temperature freezer to -90…

A: Given, moles of steam = 0.50 mol

Q: How much heat will 325.0 g H2O at 15.0 oC absorb if the temperature in increased to 90.0 oC? The…

A: Solution

Q: Ethyl chloride, C2H5CI, is used as a local anesthetic. It works by cooling tissue as it vaporizes.…

A: The molar mass of ethyl chloride is : MC2H5Cl=M2C+M5H+MCl           =[12×2+5×1+35.5]           =64.5…

Q: A 123.6 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C.…

A: Given: Mass of sample is 123.6 g. Molecular mass is 189.50 g/mol. Heat capacity of liquid is 1.62…

Q: Based on the data below, what mass of propane must be burned to supply the heat required to vaporize…

A: Enthalpy of vaporization (∆Hvap) :-  The enthalpy change involved when one mole of a liquid undergo…

Q: A 0.547 g0.547 g sample of steam at 104.3 °C104.3 °C is condensed into a container with 4.82 g4.82 g…

A: The mixing of steam and water involves the loss of heat energy by steam which will be gained by…

Q: If an insulated calorimeter contains 5.0 kg of ice at -60oC and later was heated up to 160o C.…

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Q: How much heat is required to vaporize 2.31 mol of methane, CH¼, at its boiling point? The heat of…

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Q: What amount of heat (in kJ) is required to convert 11.9 g of an unknown liquid (MM = 83.21 g/mol) at…

A: We know, heat required (q)=mass x specific heat capacity x change in temperature also q=mass x delta…

Q: What quantity of heat, in kJ, is required to convert 28.0 g of ethanol (C₂H₅OH) at 23.0°C to a vapor…

A: Concept: The branch of chemistry that deals with the structure, properties and the reaction of the…

Q: What amount of heat (in kJ) is required to convert 10.7 g of an unknown liquid (MM = 83.21 g/mol) at…

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Q: convert 41.0 g of ethanol (C₂H₅OH) at 23.0°C to a vapor at 78.3°C (its boiling point)? (specific

A: We have to find heat, in kJ, is required to convert 41.0 g of ethanol (C₂H₅OH) at 23.0°C to a vapor…

Q: How much energy in calories is absorbed when 85.55 g of ethanol melt? The heat of fusion of ethanol…

A: Melting (or ) fusion is a physical process at which the phase transition of a an any substance from…

Q: Calculate the total energy in kJ required to change the temperature of 591 g water from 96.0 °C to…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: From the data below, calculate the total heat (in J) needed toconvert 0.333 mol of gaseous ethanol…

A: We will use the formula,  Where Q= Heat change m= mass in grams = Change in Temperature c= specific…

Q: A 0.544 g sample of steam at 103.3 ∘C is condensed into a container with 5.90 g of water at 14.2 ∘C.…

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Q: A 0.542 g sample of steam at 107.3 ∘C is condensed into a container with 5.61 g of water at 14.7 ∘C.…

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Q: The density of liquid oxygen at its boiling point is 1.14 kg/Lkg/L , and its heat of vaporization is…

A:

Q: From the data below, calculate the total heat (in J) needed to convert 0.267 mol of gaseous ethanol…

A: In the above mentioned process, we first need to cool the gas from 300 °C to boiling point…

Q: Two 20.0 g ice cubes at −13.0 ∘C are placed into 285 g of water at 25.0 ∘C. Assuming no energy is…

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Q: • At its boiling point (-61 C), what mass of H2S is vaporized with 100 kJ? The AHvap of H2S, is 18.8…

A: Given : Heat used = 100 KJ And ΔHvap = 18.8 KJ/mol

Q: 6. The heat of vaporization for methane (CH) is 9.2 kJ/mol. How many kJ of heat energy are required…

A: Concept is based on molar enthalpy.

Q: What amount of heat is required to convert 10.9 g of an unknown liquid (MM 83.21 g/mol) at 19.2°C to…

A:

Q: Determine the amount of heat lost or gained by 2.50 moles of gaseous water in a closed container,…

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Q: What amount of heat (in kJ) is required to convert 18.2 g of an unknown liquid (MM = 67.44 g/mol) at…

A: Given data: Mass of liquid (m) = 18.2 g, Molar mass of liquid (MM) = 67.44 g/mol, Initial…

Q: How many joules of heat are required to heat 24.5 g of ethyl alcohol from the prevailing room…

A: Using the relation Q=mCΔT , heat requred can be calculated.

Q: Calculate the heat required to convert 25.0 g solid ethanol at -135.0 C to liquid at 72.0 C.…

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Q: A 0.554 g sample of steam at 105.5 ∘C is condensed into a container with 5.84 g of water at 14.0 ∘C.…

A:

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.