Pure lead melts at 460/deg C. Given that the heat of fusion is 1750 cal/mol, calculate the entropy change of the surroundings during the transformation. Then determine the total entropy change basec on this.

Q: For the complete combustion of decane, please calculate the value of AH°, AS° and AG°. You may…

A: In the given reaction we have to calculate the value of  for the combustion of decane.The combustion…

Q: Estimate the boiling point of an unknown substance in deg C if the latent heat of vaporization of…

A: We have to predict the boiling point.

Q: A liquid compound freezes into solid state, which is accompanied by 58.8 kJ of heat transferred to…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.38 kg sample…

A: The heat needed to raise the temperature of C3H9N is given by:Where,q = heat neededm = mass of the…

Q: . Given below is the exothermic reaction involved in the production of ammonium chloride,…

A: NH3(g) + HCl (g) = NH4Cl (s) , ∆H = -176.2 kJ

Q: 5-Define these terms: system, surroundings, open system, closed system, isolated system, and the…

A: Thermodynamics is branch of science that deals with the relationship between heat and other forms of…

Q: Consider the system 4NH3 (g) + 3O2 (g) --><-- 2N2 (g) + 6H2O (l) delta H=-1530 kJ, which is at…

A: Given :-  4NH3 (g) + 3O2 (g) &lt;---&gt; 2N2 (g) + 6H2O (l) ∆ H=-1530 kJ  To determine :-  Shift in…

Q: f 112g of water at 54oC is mixed in a calorimeter with a 95g sample iron at 139oC, what is the final…

A: Given data: Mass of water(m1) = 112 gms       Its temperature(T1) = 54°C Mass of iron(m2) = 95 gms…

Q: A 0.497 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter,…

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Q: Solid carbon–C(s, graphite), gaseous hydrogen–H2(g), and thesugar glucose–C6H12O6(s) are all burned…

A: The standard reaction enthalpy is the sum of the standard enthalpies of the intermediate reactions…

Q: For the combustion of 0.05086 mol of C5H12O(l) at constant pressure and a temperature of 25.00oC, we…

A: Various thermodynamics entities are interlinked through thermodynamics’ law such as first law,…

Q: Consider the following process: a system changes from state 1 (initial state) to state 2 (final…

A: State functions are those functions whose value depends only on the initial and final state but…

Q: When 1.00 L of 2.00 M Na SO, solution at 30.0°C is added to 2.00 L of 0.750 M Ba(NO), solu- tion at…

A: Calculate the enthaply change per mole of BaSO4 formed.To determine the number of moles of BaSO4…

Q: Calculate "work" and "change in internal energy" for the conversion of three moles of ethanol at 78…

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Q: 12. Calculate the internal energy change when a piston expands from a volume of 11.2L to 29.1L…

A: Given,The constant pressure = 1.00 atmfinal volume = 29.1 Linitial volume = 11.2 Lheat absorbed by…

Q: Macmillan Lea A house is built with a granite countertop. The heat capacity of the countertop is…

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Q: An Ideal Gas system transfers 1810 kJ of heat to the surrounding and its volume is changed from…

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Q: For the reaction ces to access important ues i this questio 2Fe(s) + 3Cl₂ (g) → 2FeCl3 (s) AG° = 687…

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Q: Carbon occurs in two forms, graphite and diamond. The enthalpyof the combustion of graphite is…

A: If a reaction is carried out in a number of steps, then the change in enthalpy can be calculated by…

Q: Why are work, w, and heat, q, not state functions?

A: State function only depends on the final system and on the initial system, it does not depend how we…

Q: 1 g of cake is combusted in a bomb calorime- ter. The heat capacity of the calorimeter hardware is…

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Q: When 1947 J of heat energy is added to 45.1 g of ethanol, C,H,0, the temperature increases by 17.6…

A: Heat energy added, Q = 1947 J Mass of ethanol, m = 45.1 g Number of moles of ethanol present, n =…

Q: 32. One (1) mole of butane (CH10) burns at constant pressure to produce carbon dioxide and water.…

A: Given,   Heat energy ( q )  = - 2870 kJ   ( negative sign because heat is produced ).  Work ( w )…

Q: Is the standard enthalpy of combustion of glucose at 25°C lower or higher than its value at blood…

A: Enthalpy of combustion of glucose is likely to be higher at blood temperature than at 25• C . Normal…

Q: how much heat is evolved or absorbed (state which), in kJ, in a reaction if the internal energy…

A: First law of thermodyanamics is given by                 ...............(1) Where,  = Change in…

Q: Which of the following is a statement of the first law of thermodynamics? O Ek = 1/2 mv2 O A…

A: Which of the given statement follows the first law of thermodynamics ?

Q: 7. The standard enthalpy of formation of NH, is - 46.0 kJ mol. If the enthalpy of formation of H,…

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Q: 31. A 345 J of work was done on the system. At the same time, the system absorbs 148 J heat from the…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: Molar masses: MH = 1 g mol-l; Mo=16 g mol-1 Specific heat capacity at constant pressure: C, (H2O, 1)…

A: At first, it is given 180 g ice and 90 g water in liquid phase, each at 0o C, and 54 g of water in…

Q: When 2.76 g of cesium perchlorate (CsClo,) is dissolved in 103 g of water in a styrofoam calorimeter…

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Q: The enthalpy change of a reaction Hrxn equals heat q, if the reaction is performed ... at constant…

A: Introduction   The enthalpy of reaction, or change in enthalpy (denoted ΔH), is a measurement of the…

Q: Which of the following is TRUE about the 1st Law of Thermodynamics? Select one: O a. It states that…

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

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Q: When 3.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 10.00oC was…

A: The specific heat capacity of a substance is the amount of heat which is required to raise the…

Q: 3. At 105 °C, 0.5 mol of liquid water vaporizes into steam spontaneously because AS of the universe…

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Q: 5. (. One mole of an ideal gas expands against an external pressure of 1.0 atm from an initial state…

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

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Q: Given the following data: ΔHf(CH4) = -74.8 kJmol-1, ΔHf(CH3Cl) = -134.5 kJmol-1, ΔHf(HCl) = -92.3…

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Q: The standard enthalpy of formation of NO2(g) at 298 K is 34.0 kJ/mol. Calculate the change in…

A: Standard enthalpy of formation of NO2(g) = 34.0 kJ/mol Temperature = 298 K

Q: how to find q rxn and H soln

A: Given , mass of water = 48.897 g

Q: The overall reaction in a commercial heat pack can be repre- sented as 4Fe(s) + 30₂(g) 2Fe₂O3(s) AH…

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Q: 2.8 g of a solid was dissolved in 51.4 g of a basic solution in a calorimeter with a calorimeter…

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Q: How many moles of isooctane are burned under standard state conditions when ΔH =  -372 kJ?

A: Sol. Change in enthalpy, ΔH = heat released = -372 kJ Standard molar enthalpy of combustion of…