When 4.04 g of solid NH4NO3 dissolves in 50.0 g of water at 26.0°C in a calorimeter, the temperature decreases to 20.3°C. The value of q for this reaction is 1.29 kJ. Calculate the enthalpy of solution (ΔH for the dissolution) in kilojoules per mole of NH4NO3 under the given conditions.

Q: Consider the following reaction: 2 Mg + O2  2 MgO,  Hrxn = -1,203 kJ.Calculate the amount of heat…

A: The given balanced chemical reaction is as follows:

Q: The standard enthalpy change for the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

Q: 1. Describe enthalpy with respect to free energy change.

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

Q: In the late eighteenth century Priestley prepared ammonia by reacting HNO3(g) with hydrogen gas. The…

A: A reaction can be categorized as an endothermic or exothermic reaction. If the energy is released…

Q: 10. Explain enthalpy, entropy, and internal energy.

A: Enthalpy:-Enthalpy is the measurement of energy in a thermodynamic system. The quantity of enthalpy…

Q: Given the thermochemical expression below: CaO (s) + 3C (s) ----> CaC2 (s) + CO (g)…

A:

Q: A 5.00 grams of LiOH is dissolved in 100.0 grams of water in a perfect calorimeter. Calculate the…

A: Given data,  Mass of LiOH = 5.00 g  Mass of water = 100.0 g  LiOH(s) --> Li+(aq) + OH-(aq) , ∆H…

Q: If 117.4 g of copper at 100.0 ℃ is added to 26.7 grams of water at 25.7 ℃, what is the final…

A: Given , 117.4 g of copper at 100.0 ℃ is added to 26.7 grams of water at 25.7 ℃

Q: The white pigment TiO2 is prepared by the reaction of titanium tetrachloride, TiCl4, with water…

A:

Q: When a 2.00 g2.00 g sample of RbBrRbBr is dissolved in water in a calorimeter that has a total heat…

A: Given, Mass of sample RbBr = 2.00gram Total heat capacity = 0.779 KJ-1K-1 Temperature is decreased…

Q: 31. Without doing any calculations, determine the sign of ASy, for each chemical reaction. a. 2…

A:

Q: Predict the sign of the enthalpy change for the following processes. Give a reason for your…

A: Hello. Since the question contains multiple subparts, the first three parts are solved. In case the…

Q: The same quantity of energy is added to 25.0 g pieces of gold ( molar heat capacity y = 25.41 J/ mol…

A: Given data,Mass of Au=Mg=Pt=25.0gCAu=25.41J/moloCCMg=24.79J/moloCCPt=25.95J/moloC

Q: 3.88 g of solid ammonium nitrate dissolves in 60.0 g of distilled water in a coffee-cup calorimeter.…

A: Given that:  Mass of ammonium nitrate given = 3.88g Mass of water = 60.0grams Initial temperature of…

Q: If 240 kJ of heat is required at constant pressure to decompose 2.0 mol of a substances to form its…

A: Standard Enthalpy of formation(∆Hfº): The standard enthalpy of formation is defined as the energy…

Q: Given that at 298.15K the standard enthalpies of formation (AH,) of nitric oxide is 90.25 kJ and…

A: Since you have posted multiple questions. I will answer only first  question as per our guideline.…

Q: When 5.40 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A: Given Mass of NH4Cl = 1.78 g Mass of CaCl2 = 3.26 g

Q: When a 4.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given,4.00 g sample of KBrTotal heat capacity of 3.04 kJ K-1.The temperature decreased by 0.220…

Q: The ΔrH for the oxidation of solid sulfur to SO3 is -396  kJmol−1 and for the oxidation of SO2 to…

A: To solve this problem we will use the given enthalpy of formation to calculate the enthalpy of…

Q: Using enthalpies of formation (See the Supplemental Data), calculate ΔH° (in kJ) for the following…

A:

Q: When 4.51 g of a solid mixture composed of NH¼CI and CaCI2 was dissolved in 100.0 mL of water, the…

A:

Q: Use Hess’s Law to determineDH for the reaction     CO(g)  +  ½ O2 (g) ®  CO2(g),  given that…

A: According to the Hess's law the change in enthalpy of a reaction is equal whether it happens in a…

Q: The standard enthalpy changes for the formation of aluminum oxide and iron (III) oxide are: 3 2 Al…

A: Given equations are : 1). 2Al (s) + 32 O2 (g) ---------> Al2O3 (s) , ΔH01 = -1676 KJ  2). 2Fe (s)…

Q: A calorimeter contains 20.0 mL of water at 14.5 ∘C . When 1.20 g of X (a substance with a molar mass…

A: From the given information, we can calculate the mass of water (solvent) and the mass of the…

Q: When 5.03 of solid potassium hydroxide are dissolved in 100.0 mL of distilled water in a coffee-cup…

A:

Q: Explain how is enthalpy related to spontaneity of a reaction?

A: The Gibbs free energy is related with enthalpy and entropy. It is shown by the formula given below.

Q: The thermochemical reaction equation for photosynthesis is as follow: 6H2O (l) + 6CO2 (g) → C6H12O6…

A: Solution:     The endothermic reaction shows the energy absorbed during the chemical reaction while…

Q: Magnesium reacts with hydrochloric acid to produce hydrogen gas. ΔH°f for HCl(aq) = –167.16 kJ/mol…

A: Given: ∆Hf° HCl(aq) = -167.16 kJ/mol ∆Hf° MgCl2= - 801.17 kJ/mol

Q: Provide the definition of the second law of thermodynamics. How does the second law explain why heat…

A:

Q: Given the following data   Calculate ΔH for reaction   On the basis of the enthalpy change, is this…

A: Answer is explained below.

Q: Using the reactions below, determine the enthalpy of the following reaction 1 g S8(s) + 02(g) →…

A: Enthalpy of a chemical reaction can be calculated from the heat of the given reactions.

Q: The value of the enthalpy of the reaction for a reaction is equal to 200 KJ / mol at 25 °C, then the…

A: Enthalpy of the reaction at 25oC = 200 KJ/ mol…

Q: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

A:

Q: Given the following thermochemical equations, calculate ΔH for the decomposition of one mole of…

A: The compound given is C2H2 (g). The elements present in the compound are C i.e carbon and H i.e…

Q: Using the equations 2 Fe (s) + 3 Cl, (g) → 2 FeCl, (s) AH° = -800.0 kJ/mol Si(s) + 2 CI, (g) → SICI,…

A:

Q: Which of the following statements define the third law of thermodynamics? O Process that requires…

A: The statement which defines the third law of thermodynamics is to be explained.     Third law of…

Q: Given the thermochemical formation reactions:   1/2 Br2(l) + F2(g) → BrF(g) ∆H˚ = -58. kJ   and…

A: 1/2 Br2(l) + 1/2F2(g)     →   BrF(g)          ∆H1˚ = -58. kJ    ............................(1) 1/2…

Q: Using the equations Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol CaO (s) + H2O (1) → Ca(OH)2 (s)…

A: Let Ca (s) + 1/2 O2 (g) → CaO (s)  ΔHo = -635 kJ/mol this be equation 1CaO (s) + H2O (l) → Ca(OH)2…

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

A:

Q: When 4.20 g of solid NH4NO3 dissolves in 50.0 g of water at 26.8°C in a calorimeter, the temperature…

A: The heat of a substance is given as:

Q: When 1 mol of a fuel is burned at constant pressure, it produces 3455 kJ of heat and does 12 kJ of…

A: Delta E = q + w  where Delta E = change in internal energy  q = heat , w = workdone

Q: The standard enthalpy change for the following reaction is -92.2 kJ at 298 K. N2(g) + 3 H2(g)→2…

A: standard enthalpy change for the reaction is given as, ΔHrxn = -92.2 KJ  Since the enthalpy change…

Q: Consider the two reactions. 2 NH, (g) + 3 N,O(g) → 4 N,(g) + 3 H,O(1) 4 NH, (g) + 3 0,(g) 2 N, (g) +…

A:

Q: (a) Magnesium reacts with hydrochloric acid to produce hydrogen gas. AH°, for HCI(aq) = -167.16…

A: Enthalpy change of the reaction is given as follows.   ∆H = ∆H(products) - ∆H(Reactants). As per our…

Q: The specific heat capacity of copper is 0.384 J/g⋅°C. What is the molar specific heat capacity of…

A:

Q: Consider the following reaction: N2(g) + 3H2(g) - 2NH3(g); AH° = - 91.8 kJ The density of ammonia at…

A: Calculate the mass of nitrogen gas. Mass of nitrogen gas = Volume of nitrogen gas × Density of…

Q: When 5.28 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A:

Q: When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee-cup…

A:

Q: Mg(s) + 2 H2O(l) ⟶ Mg(OH)2(s) + 2H2(g) | ∆Hrxn = —353.0 kJ/mol Calculate the number of grams of Mg…

A: Mg(s) + 2 H2O(l) ⟶ Mg(OH)2(s) + 2H2(g) | ∆Hrxn = —353.0 kJ/mol  99 mL of water temperature change =…