How many moles of KCIO, must be reacted according to the following balanced chemical reaction to transfer -34.2 kJ of heat? 2 KCIO3(s) – 2 KCI(s) + 3 02(g) AH = -89.4 kJ

Q: A 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: Answer:Amount of heat released or absorbed during the dissolution of 1 mole of a compound is called…

Q: Calculate the kinetic energy in joules of an automobile weighing 4175 lb and traveling at 45 mph. (1…

A:

Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 502(g) - 4NO(g) + 6H20(g), given the…

A: Enthalpy change for a reaction (∆H) depends on Stoichiometry of the reaction  If a chemical…

Q: If the reaction of 0.500 grams of aluminum metal with excess aqueous HCl releases 9.72 kJ of heat,…

A: Given- reaction - 2 Al (s) + 6 HCl (aq) --> 2AlCl3 (aq) = 3H2 (g) Q = 9.72 KJ  mass of aluminum =…

Q: When a 6.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A: Heat of solution is directly proportional to the the temperature change.

Q: 2. A 1.07 g sample of sulfur was burned in a bomb calorimeter with calorimeter constant of 2.03…

A: Mass of sulfur sample = m = 1.07 g Calorimeter constant = C = 2.03 Kcal/°C Temperature change = ∆T =…

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6 HCI(aq) → 2 MCI, (aq) + 3…

A: Hess's law states the enthalpy change for the overall reaction is the sum of the enthalpies of…

Q: Nitric acid is neutralized with potassium hydroxide in the next reaction. HNO3(aq) + KOH(aq) →…

A: We will first determine the mass of solution by adding the volume and multiplying density. And we…

Q: In a constant-pressure calorimeter, 50.0 mL of 0.350 M Ba(OH), was added to 50.0 ml. of 0.700 M HCI.…

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Q: In a constant-pressure calorimeter, 60.0 mL of 0.310 M Ba(OH), was added to 60.0 mL of 0.620 M HCI.…

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Q: When a 8.00 g sample of KCI is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given : Mass of KCl dissolved = 8 g Total heat capacity of calorimeter = 6.15 KJ/K And change in…

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: How much heat will be released (AH) if 0.4501 mol of NH3 are mixed with 0.20 mol of O2 in the…

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Q: How much heat is released when 2.50 molesof HCl(g) are formed?

A: Reaction involved for the formation of HCl(g) H2(g) + Cl2(g) -------> 2HCl(g)  For this reaction…

Q: How much heat is produced by the combustion of 4.67g of magnesium (24.30 g/mol)? Mg(s) + 1/2 O2(g)…

A: Here we have to apply mole concept, first we need to find for 1 gram Mg combustion how much energy…

Q: In a constant-pressure calorimeter, 70.0 mL of 0.300 M Ba(OH), was added to 70.0 mL of 0.600 M HCl.…

A: The question is based on the concept of calorimetry . whatever heat absorbed by solution is released…

Q: The theoretical heat of solution of sodium nitrate, NaNO3, is 20.50 kJ/mol. When 1 mole of NaNO3 is…

A: Given: The theoretical heat of solution of sodium nitrate (NaNO3) = 20.50 kJ/mol We have to find…

Q: CS2 and 10.0 g Cl2 reacts by the followi CS2(g) + 3Cl2 (g) AH = -230. kJ

A: Given, Mass of Cl2 = 10 g Mass of CS2 = 10 g Molar mass of CS2 = 76 g/mol Molar mass of Cl2 = 71 g…

Q: hore total energy than the reactants, the AG will be and if the reactants have more total energy…

A: Delta G is given as energy of product - energy of reactant  ΔG = GProduct - Greactant

Q: How much heat is involved when 68.0 g of N2 are reacted in the reaction:
2N2(g) + 5O2(g) + 2H2O(l) →…

A: Given, the chemical reaction,2N2(g)+5O2(g)+2H2O(l)→4HNO3(aq)   ; ∆H =-256 kJamount of heat evolved…

Q: Answer all questions with detailed answers on paper. a) Hydrogen gas burns in air to form water.…

A: a) Hydrogen gas burns in air to form water. 2 H2(g) + O2(g) → 2 H2O(l) ΔН = -527 kJ The heat energy…

Q: 4

A: The specific heat required to raise the temperature of per gram of a substance is given as:   The…

Q: In a constant-pressure calorimeter, 60.0 mL of 0.300 M Ba(OH), was added to 60.0 mL of 0.600 M HCI.…

A: We have to predict the ∆H for per mole of water produced .

Q: When a 0.740-g sample of trinitrotoluene (TNT), CH,N,0, Is burned in a bomb calorimeter, the…

A:

Q: Consider these reactions, where M represents a generic metal. 2 M(s) +6 HCI(aq)2 MCI, (aq) + 3 H,(g)…

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Q: The specific heat of water is 4.18. How much heat is required to raise the temperature of 500 g of…

A:

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6 HCl(aq) – 2 MC, (aq) + 3 Н,…

A: The reactions given are,

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

A:

Q: What is the final temperature when a 5.0 g sample of brass initially at 25 oC absorbs 75 J of heat?…

A: Equation for finding the heat absorbed by brass is as follows. Q=mc∆TQ=heat absorbed by brassm=mass…

Q: 2 M(s) + 6 HC1(aq) - 2 МСL, (aq) + 3Н, () AH = -581.0 kJ 2. HCI(g) → HC(aq) AH, = -74,8 kJ 3. H, (g)…

A:

Q: The combustion of CH4 releases 890.4 kJ/mol of heat according to the equation: CH4(g) + 2 O2(g) -->…

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Q: 3) The addition of CO2 to a solution containing calcium ions can lead to the formation of insoluble…

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Q: How much heat is released when 8.00 grams of solid magnesium react with gaseous oxygen to produce…

A:

Q: Here is the reaction equation for the combustion of butane, which is an exothermic reaction. 2…

A: Exothermic  reaction that releases energy from the system to its surroundings

Q: chemical reaction has a negative enthalpy of reaction (-ΔHrxn) What does this tell you about the…

A: We have to find which option is correct

Q: Reaction 3: N₂(g) + 20₂(g) Reaction 2 can be described as an [Select] [Select] reaction 2NO₂(g) ΔΗ =…

A:

Q: What is the q (heat) for 140.2 g of PCl3 decomposing to form chlorine gas and elemental phosphorus?…

A: Decomposition reaction of PCl3 is ,∆H°rxn =1207 kJMass of PCl3 = 140.2 g Molar mass of PCl3 = 137.32…

Q: Consider the reaction: When a 10.0-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is…

A: The given reaction is : C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l)        ∆H=-1.37×103 kJ

Q: For the reaction H2(g) + 1/2 O2(g) --> H2O(g), DHo = -241.8 kJ. What quantity of heat, in kJ,…

A: Balanced Reaction H2(g) + 1/2 O2(g) --> H2O(g) Here heat is released during the reaction.

Q: An ideal gas ina cylinder fitted with a piston expands at constant temperature from a pressure of 6…

A:

Q: How much energy is released when 7.00 mol iron is reacted with an excess oxygen?   4 Fe+ 3 O2 → 2…

A: Given reaction is : 4 Fe+ 3 O2 → 2 Fe2O3    ...ΔH = -1652 kJ To calculate:  Energy released = ?…

Q: Exactly 46.33 kJ of heat is transferred to a 1.389 kg slab of nickel at a temperature of 12.7°C. (a)…

A:

Q: When calculating the heat of reaction why did we have to add C calorimeter   specific heat ?

A: A calorimeter is a device used to determine the quantity of heat involved in the chemical or…

Q: . How much heat is absorbed when 60g of mercury (II) oxide reacts? 2HgO2Hg + O₂ AH = 181.4 kJ

A: Given :-  2HgO → 2Hg + O2       ∆H = 181.4 kJ  To calculate :-  Amount of heat absorbed by 60 g of…

Q: 8. Consider the reaction: C,H1,O(s) + 60;(g) → 6CO:(g) + 6H;0(1) , the heat change q for this…

A: When the energy of the products is smaller than the reactants or the system releases heat in the…