Which of the following represents an endothermic reaction? H2(g) + F2(g) –→ 2 HF(g) AH= -542 kJ C(s) + O2(g) → CO2(g) + 235kJ O 2 H20(1) + 482 kJ → 2 H2(g) + O2(g) There are more than 1 endothermic reactions. None of the reactions are endothermic.

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A: Internal energy may be defined as the total amount of energy present within a substance and it is…

Q: A chemical system has AE>0, q>0, w 0. Choose the correct statements conceming this system. Choose…

A: This question is related to thermodynamics.  Exothermic reactions are those in which heat energy is…

Q: Which of the following is true about an exothermic reaction? O The number of moles of products is…

A: ''In exothermic reaction, heat is released" therefore heat of reaction is negative

Q: A chemical reaction occurs and 64.7 cal is transferred to the system. How many joules is this? is…

A: We have to predict nature of reaction and heat in joules.

Q: In the following reaction, how many moles of CH3OH are required to produce -9.671 x 103 kJ of heat?…

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Q: Classify each of the following chemical changes as exothermic or endothermic reaction. Chemical…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 4.33g sample of an unknown salt (MM=116.83g/mol) is dissolved in 150.00g water coffee cup…

A:

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: What is the kinetic energy in joules of a 1030-kg automobile traveling at 86 km/h?  What is the…

A: Kinetic energy of the moving particle depend on its mass and velocity .

Q: When 1 mole of CH4(g) reacts with H2O(g) to form H2(g) and CO(g) according to the following…

A: Since,  1 mole of CH4(g) reacts with H2O(g) to form H2(g) and CO(g) 206 kJ of energy are absorbed.…

Q: In the following reaction, What quantity in moles of CH₃OH are required to give off 2526 kJ of heat?…

A: Given :-   2 CH₃OH (l) + 3 O₂ (g) → 2 CO₂ (g) + 4 H₂O(g)  ∆H° = -1280. kJ  To be calculated :-…

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: 2. In order to produce 972 kJ of heat, how many grams of H2 must react? 2 H2 (g) + 02 (g) → 2 H20…

A:

Q: A 1445 kg car is traveling down the road at 96.6 km/h. While traveling at this rate of speed, what…

A: Given : Mass of car = 1445 kg Speed of car = 96.6 km/hr  To calculate :- Kinetic energy (in kJ)

Q: In the following reaction, how much heat is released when 3.21 g of CO₂ are produced? C₃H₈ (g) + 5…

A: We have to predict the amount of heat produced.

Q: The reaction of iron(III) oxide(s) with hydrogen(g) to form iron(s) and water(g) proceeds as…

A: Moles of Fe2O3 reacting = mass / molar mass molar mass of Fe2O3  = 160 g/mol Hence moles of Fe2O3 =…

Q: what are the differences between an Exothermic Reaction and an Endothermic Reaction?

A: Differences between an Exothermic Reaction and an Endothermic Reaction:

Q: heat for the combustion of sucrose (table sugar, C12H22O11) is -5,647 kJ for

A: Number of moles = mass/ molar mass  Number of moles of O2 = mass of O2/molar mass of O2

Q: In the following reaction, What quantity in moles of CH;OH are required to give off 1501 kJ of heat?…

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Q: AU

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Q: If the monthly electricity consumption of a household is 6,619 kWh, what is this consumption…

A: 1 kWh = 3600 kJ

Q: A 1467 kg1467 kg car is traveling down the road at 81.0 km/h.81.0 km/h. While traveling at this rate…

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Q: Which one of the following is an endothermic process? A Hydrochloric acid and barium hydroxide are…

A: The energy difference of the products and reactants is known as the energy change of a reaction.

Q: Combustion reactions are exothermic. The heat of reaction for the combustion of butane, C,H10, is…

A: Given: The heat of combustion of butane, C4H10 is 687.8 kcal/mol.

Q: Which of the following physical processes is exothermic? a. evaporation of alcohol b. melting of…

A: Concept  1) release of energy is known as exothermic process.  2) absorption of energy is called…

Q: A list of the calorie content of foods indicates that a cup of frozen strawberries contains 224…

A: Change 224 calory to Joule and KJ

Q: which of the following processes is endothermic? propane burns in a gas gril water evaporates from…

A: The energy difference of the products and reactants is known as the energy change of a reaction. If…

Q: What is the Kinetic energy of a 2000-Ib car traveling at 59 miles per hour? (Ib =0.4536 kg, 1 mi=…

A: The Kinetic energy of a 2000-lb car traveling at 59 miles per hour is calculated as,1lb =0.4536…

Q: The reaction of carbon dioxide (g) with hydrogen (g) to form carbon monoxide (g) and water(g)…

A: Recall the given reaction,                  CO2 g  +  H2 g  →  CO g  +  H2O g12.7 g of CO2 g…

Q: In the following reaction, how many moles of CH₃OH are required to produce -1761 kJ of heat? 2 CH₃OH…

A: Given, the chemical reaction as follows,2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)  ,   ∆H° =-1280 kJwe are…

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

A: Given reaction:

Q: The reaction for the combustion of propane is   C3H8(g)+5O2(g)⟶3CO2(g)+4H2O(l)…

A: Given combustion reaction;  C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(l)  delta(H) = -526.3 kcal/mole…

Q: In the following reaction, how many moles of CH3OH are required to produce -2191 kJ of heat? 2 CH3OH…

A: The balanced reaction taking place is given as,

Q: ch of the following processes as endothermic or exothermic and include the sign for AH. opyl alcohol…

A: We habe to categorise given reaction as endothermic or exothermic and tell their ∆H sign

Q: Classify each of the following as endothermic or exothermic. A. A beaker feels cold after a…

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Q: Part E Classify reaction as exothermic or endothermic. Formation of aluminum oxide and copper from…

A: The reaction  in which heat is evolved in products side is known as exothermic reaction.Change in…

Q: When 135 mL of 0.204 M NaCl(aq) and 135 mL of 0.204 M AgNO3(aq), both at 21.5°C, are mixed in a…

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Q: Hydrogen gas reacts with oxygen to form water. 2H2(g)+O2(g)-->2H2O(g) the ethalpy of the chemical…

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Q: 2A + 3B → C       ΔHrxn = -125 kJ  Determine the amount of heat emitted when each of the following…

A: The enthalpy of reaction is based on the molar quantities of reactants that is given by the…

Q: When 130. mL of 0.198 M NaCl(aq) and 130. mL of 0.198 M AgNO3(aq), both at 21.8°C, are mixed in a…

A: When the system release energy then the process is known as exothermic. When the system absorbs…

Q: In the following reaction, how many moles of CH;OH are required to produce -3.871 × 10³ kJ of heat?…

A: The given reaction is:2 CH3OH (l) + 3 O2 (g) → 2 CO2 (g) + 4 H2O (g)∆H° = -1280 kJ⇒ 1280 kJ of…

Q: In the following reaction, how many moles of CH3OH are required to produce -3841 kJ of heat? 2 CH;OH…

A: Given data,Enthalpy=-1280kJThe reaction involved is:2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)

Q: The ΔE of a system that absorbs 12.4 J of heat and does 4.2 J of work on the surroundings is…

A: Recall the following expression from first law of thermodynamics            ∆E=q + wHere,change in…

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A: Given that 747 kJ of energy are evolved in the reaction.

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Q: What are some examples of exothermic and endothermic reactions or processes you've seen in real life…

A: Endothermic reactions are those reactions in which there is a net amount of energy absorbed by the…

Q: In the following reaction, how many grams of CH3OH are required to produce 1.578 x 10' kJ of heat? 2…

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Q: 4. Using the data in table 6.1 predict the sign and magnitude of AH ° for each of the following…

A: If the value of change in enthalpy is negative then the process is exothermic which means the energy…