Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g)  Using the equation and knowing that △Hrxn= -467 kJ/mol determine the heat of formation for MgCl2(aq).

Q: A scientist measures the standard enthalpy change for the following reaction to be 316.2 kJ : H2S(g)…

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Q: What are the signs for q and w to represent a system that's doing work on the surroundings, and…

A: “The relationship between heat with other forms of energy like light, mechanical work is studied…

Q: 19. One reaction of iron with hydrochloric acid is represented by the following thermochemical…

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Q: which of the following signs on q and w represent a system that is doing work on the surroundings…

A: Given :-  System is doing work on surrounding  System is gaining heat from surrounding  To…

Q: What happens to the value of AH for a thermochemical reacti reaction is reversed? *

A: Heat of a reaction :  Heat energy change measured at constant temperature and pressure is called…

Q: If 46.1g of copper at 11.6 degrees is place in 85.0g of water at 72.4 degrees what is the final…

A: Heat loss is given by the formula           -q = mC∆T     Or      -q = mC(Tf - Ti)  Where,  q=…

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: mass of metal=56.100g mass h2o=82.69g ti water=20.9c ti metal=92.7c tf metal and water=25.5c ^t of…

A: The heat transferred during the reaction can be determined from the given equation. The temperature…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

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Q: The addition of 1.210 g of zinc metal to 0.100 L of 0.1851 M HCl in a coffee cup calorimeter causes…

A: In any particular reaction, enthalpy change that causes at pressure constant condition is considered…

Q: The condition where a system that is doing work (w) on the surroundings while gaining heat (q) from…

A: Explanation to the correct answer is given below

Q: The value ΔH0 of for the reaction 2Ba(s) + O2(g)→ 2BaO(s)is -1107 kJ. Determine the heat released…

A: The enthalpy of a reaction is the heat that is released or absorbed in a chemical reaction that…

Q: Use standard enthalpies of formation to calculate the standard change in enthalpy for the melting of…

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Q: Calculate the molar heat capacity of substance X in units of J/(mol °C).  Potentially useful…

A: Given : Substance X has a specific heat = 6.34 J/(g °C) =6.34 Jg °C   The molar mass of substance X…

Q: Why not all endothermic processes that do work on the surroundings have the same sign for internal…

A: Endothermic processes are the processes which absorb heat energy from the surroundings. These…

Q: heat of formation

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Q: Information gathered from the Calorimetry Experiment: Mass of tire wire = 5.0 g Mass of water…

A: GIven: Mass of tire wire,mT = 5.0 g Mass of water,mw=200.5 g Initial Temperature of Water,Tw= = 30oC…

Q: Ethanol weighing 3.56g is burned in a constant-volume bomb calorimeter. Consequently, the…

A: Heat capacity of Bomb calorimeter and water = 8.224 KJ/◦C

Q: Consider the following reaction:N2O(g) + NO2(g) → 3 NO(g)                      ΔHrxn = 155.6…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: In a calorimetry experiment, a 22.5 gram metal object was heated to 64.23oC. It was placed into a…

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Q: The HHV for Ethanol is 29.7 MJ/kg. From this information, please determine the heat of formation for…

A: HHV refers to higher heating value. It is the amount of heat released when a fixed amount of fuel…

Q: Which of the following which is/are true about the internal energy, E?   (i) The total energy of…

A: Internal Energy is defined as energy dissociated with the random, disordered motion of Molecules.

Q: The reaction caused the temperature of the solution to rise from 24.18 °C to 28.27 °C. If the…

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Q: When 4.81 g of a solid mixture composed of NH4CI and Cačl2 was dissolved in 100.0 mL of water, the…

A: Please find your solution below :

Q: When 4.88 g of a solid mixture composed of NH4CI and CaC2 was dissolved in 100.0 mL of water, the…

A: When another component is added to a liquid (a solvent), the boiling point of the liquid (a solvent)…

Q: Calculate the heat of the following chemical reaction: NH3(g) + HCl(g) ----------> NH4Cl(s)…

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Q: The ΔH for the solution process when solid sodium hydroxide dissolves in water is 44.4 kJ/(mol…

A: A calorimeter is a device which is used to calculate heat released or absorbed by the system and…

Q: Use standard enthalpies of formation to determine ΔHorxnfor: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l)…

A: Standard enthalpy of formation is defined as the amount of heat absorbed or evolved in the formation…

Q: The following thermochemical equation is for the reaction of hydrogen sulfide(g) with water(l) to…

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Q: the _____ of a reaction is the enthalpy change when all reactants and products are at 1 atm pressure…

A: Enthalpy H is the amount energy absorbed or released in a process.

Q: Consider the dissolution of CaCl2 : CaCl2 (s) → Ca2+ (ag) + 2 C1-(ag) AH = -81.5 kJ An 11.7-g sample…

A: ΔH = -81.5 kJ of 1 mol CaCl2 Molar mass of CaCl2 = 110.98 g /mol Moles of CaCl2 present in solution…

Q: 150 joules of heat was absorbed by the surounding as 150 joules of work was done by the system.…

A: Given, heat is absorbed by the surrounding 150 Jules

Q: Information gathered from the calorimetry experiment: Mass of Water = 213.4 g Specififc Heat of…

A: Given information: Mass of Water = 213.4 g Specific Heat of Hydrochloric Acid = 4.04 J/goC Specific…

Q: When 5.70 g of a solid mixture composed of NH4CI and CaCl2 was dissolved in 100.0 mL of water, the…

A:

Q: A chemist places 1.750 g of ethanol, C2H6O, in a bomb calorimeter with a heat capacity of 12.05…

A: a.) Models would be calculated using formula :  Moles = mass / molar mass  b.) To calculate q ( heat…

Q: A chemical reaction is run in which 287 Joules of heat are absorbed and the internal energy changes…

A: The whole energy content of systems is represented by its "internal energy". It varies whenever a…

Q: A sample of toluene (C7H8, 92.13 g/mol) was burned in a bomb calorimeter with a specific heat…

A:

Q: The following thermochemical equation is for the reaction of methane(g) with water(g) to form…

A: Enthalpy change (∆H) is a measure of heat change taking place during a process at constant pressure.

Q: When 2.045 g of NH4NO3 (molar mass is 80.05 g/mL) is added to 100.0 mL of water at 25.09C, the final…

A: Reference: Self Introduction: Amount of heat energy that is released or absorbed when a solution is…

Q: A chemical reaction is run in which 484 Joules of heat are generated and the internal energy changes…

A: The amount of heat is released by the reaction is = 484 J The change in the internal energy of the…

Q: Consider the following thermochemical equation: Fe2O3 (s) + 2 Al (s) --> 2 Fe (s) + Al2O3 (s)   ∆H…

A: The answer to the following question is given as:

Q: COPPER Mass of EMPTY Cup 4.0g Mass Of Cupt whater 64.09 Mass of water 64.0g 4.0a Mass of COPPER…

A: Given : Mass of water = 60.0 g Mass of metal i.e copper = 17.92 g Initial temperature of water =…

Q: Suppose that the molar enthalpy of a reaction is -69.06 kJ/mol and 1.134 moles are reacted. How many…

A: energy from the reaction evolved can be calculated using molar enthalpy and moles.

Q: Suppose that the molar enthalpy of a reaction is -61.27 kJ/mol and 4.799 moles are reacted. How many…

A: since we know that molar enthalpy is the enthalpy of reaction when one mole of a substance is…

Q: If energy flows into a chemical system and out of the surroundings, what is the sign of ΔEsurr?

A: Given that,  Energy flows into a chemical system and out of the surroundings

Q: Aluminum mass of metal 50.820g temp of boiling water 98.1 C volume of water in cup 50mL temp of…

A: The data given is, Aluminum mass of metal 50.820g temp of boiling water 98.1 C volume of…

Q: What is meant by the term standard conditions with Tef (a) erence to enthalpy changes? (b) What is…

A: Step : 1            The required definitions for the questions is follows as :

Q: The following thermochemical equation is for the reaction of Fe₂0,(s) with hydrogen (g) to form…

A: Given thermochemical equation : Fe3O4(s) + 4 H2(g) -----> 3 Fe(s) + 4 H2O(g) and for this…