A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s) 2 Hg(l) + O2(g) Hrxn = 181.6 kJ  How much heat is needed to decompose 546 g of the oxide? kJ If 279 kJ of heat is absorbed, how many grams of mercury form?(g)

Q: 3.| N2(g) + 3CI2(g) → 2NCI3(1) AH°rxn = +460 kJ The reaction is _thermic, heat flows bonds between…

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Q: The enthalpy of solution (AH) of KOH is -57.6 kJ/mol. If 2.91 g is dissolved in enough water to make…

A: Given: Volume of solution = 150.0 mLDensity of solution = 1.02 g/mL.Enthalpy of solution of KOH =…

Q: Which sample will reach the lowest final temperature when all samples evolve 12.5 J of heat and all…

A: Since, Q =m.c.St WHERE Q = heat energy M =mass of metal C= specific heat of metal Triangle T =…

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: 8. The overall reaction in commercial heat packs can be represented as   How much heat is released…

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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: The specific heat of water is 4.18 J/g-K. AHsolution = -72.8 thermometer When a 9.15-g sample of…

A: To find the heat of the solution per mol, first, we need to find out q for water and then divide…

Q: 3. When 2.0 g of NaOH is the heat of dissolution are dissolved in 49.0 g of water, the temperature…

A: 3.) First we need to calculate the heat using the formula Q = mC∆T  Then we need to calculate moles…

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: Calculate the quantity of heat released when 4.00 g of CH4(g)are burned in excess oxygen according…

A: Methane react with oxygen and produced one mole of carbon dioxide and two mole of water

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: The specific heat of copper metal is 0.385 J·g -1·C -1 how many J of heat are necessary to raise the…

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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: 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: In a coffee-cup calorimeter, 29.8 g sample of solid KCl is dissolved in 100.0 g of water at 15.0 °C.…

A: Heat of solution :- It is measured by the change of enthalpy during formation of solution. This can…

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: if 11.2 g of H2 (g) (MM = 2.016 g/mol) were to react according to the balanced equation given below,…

A: We have to calculate the heat released amount.

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: 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: The reaction for the combustion of propane is kcal (DOʻHT + (8) 0E – (3)OS + (3)*H°Ɔ mol AH = -526.3…

A: Given, C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l) ∆H = - 526.3 kcal/mol Note: negative sign (-)…

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: For the following combustion reaction CH3CH₂CH₂COOH(1) +502(g) → 4CO₂(g) + 4H₂O(g) AH = -2.18 × 10³…

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Q: Which of the following represents an exothermic chemical reaction? O CO2 (g) breaking into C (s,…

A: Exothermic reaction are those in which heat is released. For exothermic reaction ∆H is negative.

Q: The reaction caused the temperature of the solution to rise from 24.18 °C to 28.27 °C. If the…

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Q: Sodium chloride is added in cooking to enhance the flavor of food. When 10.0 g of Na Cl are…

A: Given information,     Mass of sodium chloride is 10.0 g      Volume of water is 200.0 mL…

Q: When 636.5 J of heat energy is added to a 43.0 g sample of solid copper, the temperature increases…

A: This problem is based on Thermo chemistry which is a very important subpart of Thermodynamics. Here…

Q: Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield  nitrogen gas and…

A: Molar mass of hydrazine (N2H4) = 32.045 g/mol

Q: 7. When 0.63 g of solid LiCI (AHsoln = – 37.1 kJ/mol) dissolves in 5 L of water, how much heat is…

A: Answer :-  Heat released (q) when 0.63 g LiCl dissolved in 5 L water = -552.8 (J) = -0.5528 (kJ)…

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: The balanced reaction taking place can be written as, => 2 HCl (aq) + Ba(OH)2 (aq) --------->…

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

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Q: When a 7.99-g sample of gaseous hydrogen bromide dissolves in 32.4 g of water in a coffee-cup…

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Q: 18. Answer the following questions using the given equation and AH. (d) Adding so 6 CO2(g) + 6 H20…

A: The given reaction is, Heat of reaction (∆H) is also called as enthalpy of reaction. ∆H is the…

Q: A mercury mirror forms inside a test tube as a result of the thermal decomposition of mercury(II)…

A: Balanced equation: 2HgO (s)  ---->  2Hg(l)  +  O2 (g)                   ΔHrxn = 181.6 kJ Molar…

Q: 5) What quantity of heat (in kJ) will be absorbed by a 31.5 g piece of aluminum (specific heat =…

A: Answer 5.The specific heat of a substance is a measure of the amount of heat energy required to…

Q: In a constant-pressure calorimeter, 50.0 mL of 0.340 M Ba(OH), was added to 50.0 mL of 0.680 M HCI.…

A: Given: Concentration of Ba(OH)2 = 0.340 M Volume of Ba(OH)2 solution = 50.0 mL = 0.050 L…

Q: In a constant-pressure calorimeter, 70.0 mL of 0.300 M Ba(OH)₂ was added to 70.0 mL of 0.600 M HC1.…

A: The question is based on the concept of chemical thermodynamics . we have been given experimental…

Q: In a Calorimetry experiment, a chemical reaction causes the temperature of the solution in the…

A: The heat released can be measured by product of mass of substance with specific heat ad change in…

Q: Use Reaction 2. How much energy (in kJ) is released when 49.0 g of oxygen difluoride decomposes?…

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

A: Given, Ba(OH)2 taking part in reaction = 55.0 mL of 0.300 M HCl taking part in reaction = 55.0 mL of…

Q: When 50. g of solid carbon dioxide (dry ice) sublimes 28.6 kJ of heat are required. How much heat…

A: This problem is solved by means of the rules of unitary method.

Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

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Q: Consider the following reaction: 2Cr2O3(s)    4Cr(s) + 3O2(g)  DH = 2279.4 kJ Calculate the…

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Q: f the heat of precipitation of barium sulfate is -1473.2 kJ/mol, what is the heat of solution…

A: A chemical equation can be added, subtracted, multiplied, or divided similar to an algebraic…