(1/8)S8(s) + H2(g) →H2S(g)  ΔHrxn = −20.2 kJ   What is ΔH when 4.90 mol of S8 reacts?

Q: Consider the following thermochemical reaction: 6 HCl(g) + 2 BCl3(g)-->B2H6(g) + 6Cl2(g) ΔHrxn =…

A: Given :-  6 HCl(g) + 2 BCl3(g)-->B2H6(g) + 6Cl2(g) ΔHrxn = +755.4 kJ  To calculate :-  mass of…

Q: Given the following thermochemical equations, AH° = -1132 kJ 4NH3(g) + 702(g) → 4NO2(g) + 6H2O(3)…

A: To calculate the ∆Ho for the given reaction , by using the given ∆Ho for above two reactions , we…

Q: What is the specific heat in J/g°C for a metal sample with a mass of 95.6 g which absorbs 841 J of…

A: Heat, q = mass x specific heat x change in temperature.

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

A: The given reaction is, 2H2O(l) ---> O2(g) + 2H2(g) ........∆H = 572 kJ 572 kJ energy provided for…

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

A: First the given balanced reaction is as follows, CO(g) + H2O(l)= CO2(g) + H2(g)     Observing the…

Q: Hot packs can be made from calcium chloride by mixing/reacting it with water (reaction shown below).…

A: A numerical problem based on enthalpy change of reaction, which is to be accomplished.

Q: if 0.0102 moles reacted and 476.5 J of heat were absorbed by the reaction in a coffee cup…

A:

Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

A: Given data, Mass of Na=1.416gEnergy produced for the given reaction=822kJ

Q: A piece of unknown metal at 95.0oC with a mass 10.7 g place in a coffee-cup calorimeter with 100.0 g…

A: The principle of calorimetry is -                  Heat lost by Metal = Heat gained by Water Based…

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: Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and…

A: Enthalpy of reaction (∆ Hrxn): The difference in the enthalpies of reactants and products.

Q: 3) When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized completely by 75.0 mL of 1.0 mol/L…

A:

Q: PCl3 is a compound used to manufacture pesticides. A reaction requires that 100.0 g of PCl3 be…

A: Applying formula Q= mc∆t

Q: The following thermochemical equation is for the reaction of carbon monoxide(g) with chlorine(g) to…

A:

Q: 4. How much work is done by or on the system (state which), in Kcal, in a reaction if the internal…

A: The solution is given below -

Q: Consider the following balanced thermochemical equationfor a reaction sometimes used for H₂S…

A: Reactions are classified as exothermic and endothermic depending on whether these are associated…

Q: 4. How much work is done by or on the system (state which), in kcal, in a reaction if the internal…

A: To calculate the work done by or on the system , we would Calculate value and sign of w using first…

Q: In the following experiment, a coffee-cup calorimeter containing 100. mL of H2O is used. The initial…

A: Given: Volume of calorimeter = 100 mL Initial temperature        = 23 oC Mass of CaCl2…

Q: When 4 miles of NH3 (g) react with O2 to form NO(g) and H2O(g) according to the following equation,…

A:

Q: When N2(g) reacts with O2(g) to form NO2(g) , 66.4 kJ of energy are absorbed for each mole of N2(g)…

A: A chemical equation is used to express a chemical reaction. In a chemical equation, the reactants…

Q: A cylinder contains a mixture of gases under constant atmospheric pressure. The gases undergo a…

A: The thermodynamics is the branch of science which deals with the heat and other forms of energy.…

Q: Given the following reaction: 2 N2H4(g) + N2O4 → 3 N2(g) + 4 H2(g) ∆H = -1049 kJ mol-1 (a) Write…

A: Given: Reaction To find: a) Thermochemical equation for 1 mol b) Thermochemical equation for reverse…

Q: What is the specific heat in J/g°C for a metal sample with a mass of 78.9 g which absorbs 753 J of…

A:

Q: 1. How many KJ are used by a 154lb adult while sleeping for one hour? 2. In the specific heat…

A:

Q: Given the following thermochemical equations with hypothetical AH values: 2NH3 (g) + 3N2O (g) → 4N2…

A:

Q: Given that CaO(s) +H2O(l) -CalOH>(s), AH 64.8 kJ/mol, how many erams of Cao (MM HOAgmol must react…

A: given;

Q: 7. Consider the following balanced thermochemical equationfor a reaction sometimes use for H2S…

A: Given that -  1/8S8(s) + H2(g) -----> H2S(g) , ∆Hrxn = -20.2 kJ   Here, 1/8 = 0.125 moles…

Q: The thermite reaction, used for welding iron, is the reaction of Fe3O4 with Al. 8Al(s) + 3Fe3O4(s)…

A: Recall the given reaction,                     8 Al s  +  3 Fe3O4 s  →   4 Al2O3 s  +  9 Fe s…

Q: The overall reaction in commercial heat packs can be represented as the reaction below. 4 Fe(s) + 3…

A:

Q: A cylinder contains a mixture of gases under constant atmospheric pressure. The gases undergo a…

A: Given that:         A mixture of gases are present in a cylinder at constant atmospheric pressure.…

Q: Methane burns with oxygen to produce carbon dioxide and water as a gas. The balanced thermochemical…

A:

Q: The average propane cylinder for a residential grill holds approximately 18 kg of propane. How much…

A:

Q: 10.) The heat of formation of H2SO4 (ag) is -909.27 kl/mol. Which of the following is the…

A: Given:  Heat of Formation for H2SO4 is -909.27kJ/mol

Q: The following thermochemical equation is for the reaction of sodium(s) with water(l) to form sodium…

A: The balanced reaction taking place is given as, => 2 Na (s) + 2 H2O (l) --------> 2 NaOH (aq)…

Q: Hydrogen cyanide is a highly poisonous, volatile liquid. It can be prepared by the reaction: (1) CH4…

A:

Q: reaction sometimes used for H2S production: ⅛S8(s) + H2(g) → H2S(g) ∆Hrxn = -20.2 kJ (a) Is this an…

A: As you not specified so I am giving answer of 1first question as per guidlines Reaction is…

Q: 4. Sodium carbonate is a white powder used in the manufacture of glass. When hydrochloric is added…

A: The chemical equation can be written as: 2H+(aq)+CO32-(aq)→CO2(g)+H2O(l) To calculate the ΔHº for…

Q: What is the specific heat of a material when 55.2 g of it change temperature by 35.8 °C when it…

A: We have given that  Q= 4526J  Temperature change =∆T= 35.8°C  Mass of material = 55.2g  Specific…

Q: If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the…

A:

Q: Combustion of table sugar produces CO2(g) and H2O(l). When 1.46 g table sugar is combusted in a…

A: Given,  The mass of sucrose burnt = 1.46 g Heat (q) = 24 kJ. a.Assuming that table sugar is pure…

Q: Oxygen generators in some airplanes are based on the chemical reaction between sodium chlorate and…

A: Given mass of sodium chloride = 553 g  Molar mass of sodium chlorate = 106.44 g.mol-  Moles = given…

Q: 6 & 7. Consider the following reaction: 2 CH,OH (g) → 2 CH(9) + O2 (g), AH = + 252.8 kJ a) Is this…

A:

Q: The reaction of carbon(s) with oxygen (g) to form carbon dioxide(g) proceeds as follows:…

A: In this question, we will determine the change in enthalpy ∆H for the given chemical equation.  You…

Q: The air in an inflated balloon (the system) absorbs 115 J of heat. As it expands, it does 88 kJ of…

A:

Q: When methanol, CH3OH,CH3OH, is burned in the presence of oxygen gas, O2,O2, a large amount of heat…

A: Given: mass of methanol =22.9 g           mass of oxygen = 35.6 g To find: the Amount of heat…

Q: When N2(g) reacts with H2(g) to form NH3(g) , 92.2 kJ of energy are evolved for each mole of N2(g)…

A:

Q: Liquefied petroleum (LP) gas burns according to the following exothermic reaction:…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: Titanium(IV) oxide has a wide range of applications in industrial and consumer products, such as…

A: Endothermic Reaction Exothermic Reaction The energy is absorbed from the surrounding into the…