In a coffee cup calorimeter, the temperature of 35.0 g of water drops from 200C to 15.60C when 9.0 g KBr is dissolved in it. What is the heat of the reaction in kJ/mol? Is the reaction exothermic or endothermic?

Q: Suppose that the reaction of 2.172 moles consumes 3.21 kJ of heat. What is the molar enthalpy of the…

A: The answer to the following question is :

Q: Find the enthalpy of reaction in kJ/mol when 25mL of 1.0M NaOH combines with 25mL of 1.0M HCl in a…

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Q: In a constant-pressure calorimeter, 55.0 ml. of 0.350 M Ba(OH), was added to 55.0 mL of 0.700 M HCI.…

A: Given,The volume of Ba(OH)2=55 mLThe concentration of Ba(OH)2=0.350 MThe volume of HCl=55 mLThe…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Given,The mass of K2SO4 = 9.07 gThe mass of water = 110.50 gInitial temperature of the solution =…

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.…

A: Total volume = 70.0+70.0 mL = 140 mL Specific heat = 4.184 g/mL Mass = 4.184g/mL × 140 mL = 585.76 g…

Q: 2. If the temperature rises from 18.7 °C to 25.2 °C when 1.988 g of MgO pellets are added to 199.0…

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Q: Suppose that the reaction of 1.116 moles consumes 30.34 kJ of heat. What is the molar enthalpy of…

A: Enthalpy change  is associated  with change of one substance undergoing  any change is called as…

Q: How much heat (in kJ) is absorbed in the process of making 0.877 mol of CF, from the following…

A: The given chemical reaction is as follows,C(s)+2F2(g)→CF4(g)       ∆H° =141.3 kJmolnumber of moles…

Q: A 35.0 mL solution of 0.600 M compound A is mixed with an excess of compound B solution at 12.8 C in…

A: Since the temperature of the solution inside the calorimeter is increased, heat is absorbed by the…

Q: In a constant‑pressure calorimeter, 65.0 mL of 0.340 M Ba(OH)2 was added to 65.0 mL of 0.680 M HCl.…

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Q: A coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution at an initial temperature of…

A: Given,  A coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution   and 50.0 mL of 1.17 M…

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

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Q: 25.0 mL of 1.00 M HCl at 23.5oC react with 25.0 mL 1.00 M NaOH in a styrofoam calorimeter whose…

A: The energy of a system is always conserved. The amount of heat released or absorbed by the reaction…

Q: A 0.562 g sample of KCl is added to 35.8 g of water in a calorimeter. If the temperature decreases…

A: The heat capacity of the resulting solution is 4.18 J/goC, which states that 4.18 J of energy will…

Q: In a constant-pressure calorimeter, 55.0 mL of 0.300 M Ba(OH)₂ was added to 55.0 mL of 0.600 M HCl.…

A: Given data :

Q: The reaction between 0.474 g of magnesium and 200. mL of 2 M HCl resulted in an increase of 7.1°C in…

A: We have to find the number of moles of Mg in 0.464 g Mg.  The number of moles = mass /molar mass =…

Q: Consider the hypothetical case of removing the magnesium sulfate from solution and reforming the…

A: The heat energy released when new bonds are made between the ions/molecules and water molecules is…

Q: Suppose that the reaction of 2.553 moles produces 38.34 kJ of heat. What is the molar enthalpy of…

A: Let us consider a reaction,          Reactant -----> Product    The values provided in the…

Q: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: The enthalpy for the formation of 1 mole of NH3(aq) is -80.29 kJ/mol. What is the enthapy for the…

A: The heat of formation of a compound is defined as the heat change accompanying for the formation of…

Q: Calculate the change in enthalpy (in kJ/mol) for the following reaction using the data provided.…

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Q: Calculate ΔH (in kJ/mol) for the reaction shown below: ClF(g)+F2(g)→ClF3(g) Use the following…

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Q: Write the balanced chemical equation representing the reaction of hydrochloric acid and sodium…

A: In the given question we have to calculate the heat of neutralization in kJ/mole.

Q: A student performed the procedure described in the lab manual using 49.9 mL of 1.0 M HCI and 49.3 mL…

A: Molarity of HCl = 1.0 MVolume of HCl: 49.9 mLMolarity of NaOH = 1.0 MVolume of NaOH = 49.3 mLInitial…

Q: What is the enthalpy change for the reaction CaO(s) + CO2(g) = CaCO3(s)? Substance. Enthalpy…

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Q: The fuel value of hamburger is approximately 3.6 kcal/g. If a man cats 0.55 pounds of hamburger for…

A: The fuel value of hamburger = 3.6 kcal/g fuel value = 0.55 pounds The heat of vaporization of water…

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A: We will calculate ∆H

Q: When a 7.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: A student decides to find the molar enthalpy for the reaction between phosphoric acid and calcium…

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Q: A common technique for forming metal electrodes on electronic devices is evaporation in a vacuum. In…

A: Given Data: The enthalpy of vaporization (ΔHvap) for gold = 310.9 kJ/mol given mass of  liquid gold…

Q: Determine the standard enthalpy of formation for N2O given the following information about the…

A: Hess's lawThe enthalpy change of a reaction is calculated by subtraction of sum of standard enthalpy…

Q: 25.0 mL of 1.00 M HCl at 24.3°C react with 25.0 mL 1.00 M NAOH in a styrofoam calorimeter whose…

A: Using the energy conservation , in calorimeter  heat given in the reaction of neutralisation =heat…

Q: The evaporation of water is endothermic. What minimum mass of water (in grams) has to evaporate to…

A: We have given the Molar mass of hydrogen = 2.02 g/mole Molar mass of oxygen = 32 g/mole So Molar…