3A HacHon releaser 615 calores Of heat ond perfommJ 355 Joules 515 calones of WORK HS SURROUndings on calculate the Chanage in internal Joules ange (Ical =41845) In 50

Q: The value ofE for a system that performs 111 kJ of work on its surroundings and gains 89 kJ of heat…

A: According to the sign conventions, Work done by the system is taken as negative. Heat gained by the…

Q: The combustion of isoctane reaction produces -5099.5 kJ of heat per mole of C8H18 (g) consumed,…

A: Given data , □Hcomb = -5099.5 kJ of heat per mole of C8H18 (g)    (□Hf) for CO2(g) =  -393.5 kJ/mol…

Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol1 K-1. How much heat in cal is…

A: `Given:-  Molar Heat Capacity for CO = 6.97 cal mol-1 K-1 Final Temperature = 392K Initial…

Q: the 10.0 g sample of metal is heated to 100.0 degrees celsius and then added to 20.0 g of water at…

A: The relationship between heat , specific heat capacity and change in temperature is given by the…

Q: At 1 atm, how much energy is required to heat 75.0 g H,O(s) at -24.0 °C to H,O(g) at 167.0 °C? Use…

A: heat is required to for a substance undergo different changes including the change in the state of…

Q: Calculate ΔE and determine whether the process is endothermicor exothermic for the following cases:…

A: Given: Heat gained=0.763 kJ Work done=-840 J Heat released=-66.1 kJ Work done=44.0 kJ Conversion: To…

Q: Calculate the work done (J) by 10 mole of an O2(g) when it expands reversibly at a constant pressure…

A: For an ideal gasPV=nRT WhereP= pressure V= volume n= number of moles T=temp

Q: 2) Substance kJ/mol Substance kJ/mol Standard molar enthalpies of formation of some substances,…

A: Interpretation-  To determine the heat produced in the combustion of 4g of ethanol at room…

Q: Calculate the standard enthalpy of formation of pentane, C,H,2, using the given information. 5C +…

A:

Q: A gas is confined to a cylinder under constant atmosphericpressure, as illustrated in Figure 5.4.…

A: Given: Heat absorbed by the system = 824 J Work done on the system       = 0.65 kJ

Q: Calculate the molar heat capacity of iron in J-mol 1°C1. Its specific heat is 0.4498 J-g1.°C-1. i…

A: Molar heat capacity = Specific heat capacity × molar mass   Molar mass of iron = 55.845 g/mol…

Q: Q6. The heat of combustion of 1,4-butanediol (C4H1002) at 298.15 K, determined in a bomb calorimeter…

A: Molar mass of 1,4- butanediol is 90g/mol

Q: From the following heats of combustion, AH:° = -3119.6 kJ/mol kJ/mol AH:° = -393.5 kJ/mol AH:º=…

A:

Q: Calculate the energy required to heat 1.00 kg of ethane gas (C2H8) from 25.0 C to 75.0°C first under…

A:

Q: Calculate the change internal energy (AE) for a system that is giving off 45.0 kJ of heat and is…

A: Given : Heat released = -45KJ Work done on the surroundings = -855J

Q: A 33e1289 sample F an unknown metal is heated to 10001°C in e hot waterc bath untill thermar…

A:

Q: um with the coffee ter at 62.7 °C. J qunknown fic heat capacity of aterial? ?] J/g °C

A: Mass = 58.0 g Initial Temperature = 111.0 °c Final Temperature = 62.7 °c Q = -7550 J

Q: What quantity of energy is needed to heat a 1.00-mole sample of H20 from - 34.0°C to 120.0°C? State…

A: Mass of one mole of water = 18 g Amount of energy required to raise the temperature of water from…

Q: A certain hydrocarbon of the molecular formula C,H2, has a standard enthalpy of formation AH, =…

A: For the combustion reaction, the chemical equation is shown by equation (1) and the value for x is…

Q: For the transfer of heat from a cold object A at -24oC to a hot object B at +25oC, is the value of…

A: Generally, heat continues to transfer until both systems reach same temperature.

Q: What temperature increase would be expected if the same 1.200 g sample of benzoic acid were…

A:

Q: 1. Determine the total amount of heat required to decrease the temperature of 25g H,0 from 25 C to…

A: Hello. Since the question contains multiple parts, the first part is solved. In case the solution…

Q: a system recieves 425J of heat and delivers 425J of work toits surroundings. what is the change in…

A: Given Heat ( q ) = +425 J ( as heat is received to system ) Work ( w) = +425 J ( as work done by…

Q: Equation of the first law of thermodynamics is O a. Internal Energy= Heat rejected into work done O…

A:

Q: The heat capacity of propane gas is given by the following equation:Cp A+BT+CT? where: A10.5 J mor…

A: Heat capacity is the amount of heat which is used by the system to increase the temperature by one…

Q: The table below shows the standard enthalpy of formation of carbon dioxide, water and nitromethane,…

A: Combustion of CH3NO                 4CH3NO(l) + 5O2(g)  ------> 4CO2(g) + 6H2O(l) + 2N2(g)  ∆Hf…

Q: FInd the question in attachement

A: Given: Heat transferred(Q) = 46.71 kJ = 46710 J Mass of slab(m)= 1.429 kg = 1429 g  intital…

Q: 8g of alcohol is burned while heating 200 gr of water from 20°C to 80°C on a Bunsen burner. What…

A: Given: mass of water = 200 g Initial temperature of water = 20 oC Final temperature of water = 80 oC…

Q: 1. At a constant pressure of 1.00atm, 550OJ of heat was applied to the gas in the cylinder, and the…

A: Work energy of the gas at constant pressure is calculated by using below formula,…

Q: If 2.00 mol of an ideal gas at 25°C expands isothermally and reversibly from 9.00 to 36.00 L,…

A: If the variables of a system change, the system moves from one state to another. It means some…

Q: The amount of heat energy released when zinc metal reacts with hydrochloric acid: Zn(s) + HCl(aq) →…

A: In a process, if heat is absorbed then the sign of ∆H will be positive.

Q: A certain hydrocarbon of the molecular formula C,H2, has a standard enthalpy of formation AH =…

A: Complete combustion of alkene produces CO2 and H2O

Q: Fonsi Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume…

A:

Q: How to slove for specific heat capacity. Q=MxCxDeltaT -301J = 30.0g x C x -78.56°C how can I…

A: Given : Q = M C ΔT  where M = mass = 30.0 g C = specific heat capacity Q = heat transferred = -301 J…

Q: The most sophisticated way of measuring enthalpy change is to use A. an isobaric calorimeter OB. a…

A: Given the most sophisticated way of measuring enthalpy change is to

Q: When 0.515 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises…

A: Mass of biphenyl combusted = 0.515 g Molar mass of biphenyl = 154.21 g/mol  Therefore moles of…

Q: Calculate, in J, the work done by 10.0 g of CO2 when it sublimes against a pressure of 1.00 atm to…

A:

Q: We have a calorimeterthat has a mass of 100.0 g of waterinside (cwater = 4.1840 J/g-K). The…

A: Given: Mass of water = 100.0 g. Initial temperature of water = 20.0 oC Final temperature of system =…

Q: A 0.1375g sample of solid Mg is burned in a constant volume bomb calorimeter that has a heat…

A: The following relation gives the amount of heat absorbed or released by a substance. Q=mC∆T where…

Q: 1.00 mol of a diatomic ideal gas in a piston-cylinder initially occupies 8.0 L at 300 Kelvin and…

A: Given, T1 = 300 K V1 = 8 L T2 = 390 K n = 1 mol

Q: 2b. The enthalpy of reaction for the combustion of cyclopropane (i.e., the reaction in 2a) is…

A:

Q: 10. The following molar enthalpies of formation are given in kJ/mol: AHP[C;Hs(g)] = -104;…

A:

Q: Calculate the change in internal energy (AE) for a system that is giving off 65.0 kJ of heat and is…

A: Given: Heat transfer, q=-65.0 kJ (Heat lost, so, q=-ve) Work, w=-855 J=-855 /1000 =-0.855 kJ   (1 kJ…

Q: 6. Consider the following reactions: a. Hgm → Hg) b. 30a(g) → 203(®) c. CUSO, 5H2(s) → CuSO4te) +…

A:

Q: A system does 435 kJ of work(w) and loses 312 kJ of heat(q) to the surroundings. What is the change…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Another group performed the combustion of sucrose. Determine the AHcombustion (in kJ/mol) of sucrose…

A:

Q: At constant volume, the heat of combustion of a particular compou (molar mass = 162.47 g/mol) was…

A:

Q: 1. Calculate the energy required to heat 1.00 kg of ethane gas (C2H6) from 25.0°C to 75.0°C first…

A: First convert the mass of ethane in kg to g. Since, 1 kg = 1000 g Molar mass of ethane = 30 g/mole…

Q: When 1.034 g of naphthalene (C10H8 ) is burned in a constant-volume bomb calorimeter at 298 K, 41.56…

A: The given data contains, mass = 1.034 g. heat = 41.56 kJ. Temperature = 298 K.

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.