Consider the reaction: H2(g) + (1/2)O2(g) -------> H2O(l) ΔH° = -286 kJ Which of the following is true? 1) Heat is absorbed by the system. 2)The reaction is exothermic 3) The enthalpy of the products is less than that of the reactants. 4) Two of these are true 5) The reaction is endothermic

Q: Consider the combustion of isobutane (C4H10; 58.123 g/mol; ΔH°comb = -2849.7 kJ/mol) in excess…

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Q: 0. Given the reaction, Ca(s) + C(s) + 3/2 O₂(g) --> CaCO3(s) A cH= -1205.8 kJ/mol, how much heat is…

A: Ca(s)  +  C(s)  + 3/2O2 (g)   ------>  CaCO3(s)      delta H  = -1205.8 kJ/mol

Q: what is the final temperature of the solution?

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Q: What is the enthalpy, dH, when 176.1 g NiO reacts with unlimited sulfur dioxide in the following…

A: A numerical problem based on thermochemical reaction, which is to be accomplished.

Q: What is the standard enthalpy change for the reaction? 2NH3(g) ----* NzH4(1) + Hz(g) (A) -935…

A: What is the standard enthalpy change for the reaction?

Q: How much heat is absorbed in the comp eaction of 3.00 grams of SiO2 with ex arbon in the reaction…

A: Mole is equal to weight of substance divide by it's molar mass

Q: Use the information provided below to calculate AGran (kJ/mol) for the reaction at 25°C. R= 8.314…

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Q: Elemental iron is used in heat packs and the reaction can be represented as: 4 Fe(s) +3 O2(g) → 2…

A: When enthalpy is negative that means reaction is exothermic reaction

Q: Determine

A: We will calculate ∆H rxn by doing operation in giving equation

Q: The standard enthalpy change for the following reaction is -359 kJ at 298 K. Pb(s) +…

A: The objective of the question is to find the standard enthalpy change for the reverse reaction of…

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

A: First, calculate moles of BaO(s) No of moles of BaO(s) = Mass/Molar mass = 5.75g/(153.33g/mol) =…

Q: A calorimeter has a heat capacity of 35.45 J/C. When 100.0 mL of a strong acid at 23.1°C is mixed…

A: Given  Specific heat of calorimeter 35.45J/°C  Specific heat of solution = 4.10J/g°C  Initial…

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Q: What mass of iron is produced if 58.2 kJ of heat are released according to the following equation?…

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Q: Consider the reaction: C,H,OH) + 30, (g) →2CO,(g)+3H,01), AH = -1.37 x 10° kJ When a 21.1-g sample…

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Q: 2C4H10(g) + 1302(g) → 8CO2(g) + 10H₂O(g) AH° is -125 kJ/mol and AS is +253 J/molK. This reaction is:

A: Gibbs free energy is defined as the sum of the system's enthalpy (H), and the product of temperature…

Q: The standard enthalpy change for the following reaction is -1.55×103 kJ at 298 K. 2 Fe(s) + 10…

A: Standard enthalpy change for the given chemical reaction

Q: Draw an enthalpy diagram for a general endothermic reac-tion; label the axis, reactants, products,…

A: An enthalpy diagram for a general endothermic reaction; label the axis, reactants, products, and ΔH…

Q: Calculate ΔH per the reaction NO(g) + O(g)-> NO2(g) Data: NO(g) + O(g)-> NO(g) + O2(g)      ΔH=…

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Q: For the reaction 2 CO(g) + O2(g) –2 CO2(g) AG° = -522.4 kJ and AS° = -173.1 J/K at 252 K and 1 atm.…

A: ∆G is negative reaction will go in forward direction or product side You are given a relation and…

Q: When determining the energy of a reaction where 0.250 mol of a substance with a ΔHcomb = -2250.0…

A: Given : ΔHcomb = -2250.0 kJ/mol And moles of reactant combusting = 0.250 mol.

Q: For the following reactions identify if they are exothermic or endothermic.    2NO2 → 2NO + O2 ΔH =…

A: The heat energy shift (∆H) that occurs when reactants become products is known as enthalpy of the…

Q: 2. Which chemical reaction below yields the heat of formation of gaseous carbon monoxide (CO)? (A)…

A: Heat of formation can be defined as the change in enthalpy involved in the formation of one mole of…

Q: etermine the enthalpy for the reaction shown below. CS2(l)  +  3O2(g)  -->  CO2(g)  +  2SO2(g)…

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Q: Consider the reaction.   2Fe2O3⟶4Fe+3O2      Δ?∘rxn=+824.2 kJ The formation of 77.0 g77.0 g of Fe…

A: Molar mass of Fe = 55.845 g/mol  4 moles of Fe = 223.38 gm  Means, 223.38 g Fe forms with absorption…

Q: A 1.00 g sample of MgCl2 produced a 10.00 °C increased in a calorimeter charged with 40.0mL of…

A: Mass of MgCl2 = 1.00 g Increase in temperature, ΔT = 10.00 °C Specific heat of MgCl2, C = 0.750…

Q: The reaction written below has a ΔH of +2,980 kJ/mol            6CO2(g) + 6H2O(g) --> C6H12O6(g)…

A: The balanced reaction given is, => 6 CO2 (g) + 6 H2O (g) → C6H12O6 (g) +6 O2 (g)…

Q: The reaction written below has a ΔH of +2,662 kJ/mol          6CO2(g) + 6H2O(g) --> C6H12O6(g)…

A: Carbon dioxide reacts with water to form glucose and oxygen. The equation for the balanced chemical…

Q: For the reaction below ΔH = -296 kJ per mole of SO2 formed. S(s) + O2(g) → SO2(g) (b) Calculate…

A: From the amount of SO2 formed we can figure out the heat released on burning of 0.544 mol of sulfur.

Q: Given the following data, calculate ΔH for the reaction of two moles of carbon monoxide with oxygen…

A: The indirect calculation of enthalpy change by use of several reactions with known enthalpies is…

Q: How much heat (in kJ) will be released (AH) if 1.20 mol of SrO is mixed with 0.951 mol of CO2 in the…

A: We will calculate heat in kj

Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 75 J…

A: The process happening on the system is of two steps given as, Step 1: The system absorbs 75 J of…

Q: Determine the enthalpy for the reaction shown below. CS2(l)  +  3O2(g)  -->  CO2(g)  +  2SO2(g)…

A: In this question, we have to find out the correct answer of given problem by the help of…

Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 71 J…

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Q: Calculate the enthalpy change, ΔΔH, for: CCl4(l) + 4 HCl(g) ⟶⟶ CH4(g) + 4 Cl2(g)

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Zn(s) + O2(g)2ZNO(s).....…

A: Given: The reaction are as follows: 2Zn(s) + O2(g)------>2ZnO(s)                      ∆H0=-696.6…

Q: The value of ΔHo for the following reaction is -72 kJ. How many kJ of heat will be evolved when 4.0…

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Q: What is the AH°rxn for the reaction of gaseous ammonia and oxygen gas to form gaseous nitrogen…

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