The heat of reaction for the reaction A + 2B → 2C is 900. kJ. The heat of reaction for the reaction B + D → C is 150. kJ. Using Hess's Law, calculate the heat of reaction for the reaction

Q: Which number represents the enthalpy change in the reaction? 2 Reaction Coordinate 90 Potential…

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Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

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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: Determine the heat capacity of 20.0 g of water. The specific heat of water is 4.184 J/g °C

A: Given  Mass of water m=20g Specific heat capacity S= 4.184 Jg-1 °C-1

Q: Choose whether the following statement is ENDOTHERMIC or EXOTHERMIC: A flask containing a reaction…

A: Reaction can be of two type : Endothermic and exothermic.

Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: The standard enthalpy of formation is defined as the change of enthalpy during the formation of 1…

Q: The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase…

A: Given: Volume of water = 25 mL of water density = 1.00 g/mL Temperature change= from 25 °C to 85 °C…

Q: A cold pack is an example of an reaction and works by A hot pack is an example of an reaction and…

A: A hot pack and cold pack are example of what and what reaction work by hot pack and cold given…

Q: The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase…

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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: How much heat is absorbed in the process of making 0.803 mol of CF4 from the following reaction? C…

A: Heat of formation, also called standard heat of formation, enthalpy of formation, or standard…

Q: An exothermic reaction causes the surroundings to: A. become basic B. decrease in temperature C.…

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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: Only question7 plz

A: Given that:                            Mass of the copper (m) = 22.6 g…

Q: Consider the reaction: H2(g) + (1/2)O2(g) -------> H2O(l) ΔH° = -286 kJ Which of the following is…

A: Consider the reaction-      H2(g) + (1/2)O2(g) ---> H2O(l) , ∆H=-286kJ  Since the enthalpy(∆H) is…

Q: From the following reactions, determine the reactions that are exothermic. (i) F(g)+e¯ →F¯(8) (ii)…

A: i) F (g) + e- ------> F- (g) Electron affinity is defined as the amount of energy released by…

Q: Many portable gas heater and grills use propane as a fuel. Using standard enthalpies of formation,…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: (a) Mass of the Calorimeter (two empty cups) in g: 4.0g (b) Mass of the cold water and the…

A: Given data:

Q: Which sample is most likely to undergo the smallest change in temperature upon the absorption of 100…

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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: The enthalpy change in a reaction relates to: a) The difference between the kinetic energy of…

A: Enthalpy is the heat content of the system.

Q: Given the following reaction, calculate the enthalpy of reaction. Identify whether the reaction is…

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Q: The reaction between nitrogen and oxygen gases require the absorption of 43 kJ of energy per mole of…

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Q: Once CS2 (carbon disulfide) is formed from its elements, heat is then absorbed.  How much heat would…

A: Given that When 1 mole of CS2 is formed from its constituents elements, heat energy equal to 89.3…

Q: 3. A gas does 135 J of work while expanding, and at the same time, it absorbs 156 J of heat. What is…

A: Given: (3) work done by gas=135J Absorbed heat=156J To find: change in internal energy of the…

Q: Calculate the heat exchanged when 32.0 g oxygen reacts with 16.0 g methane:  CH4(g) + 3/2 O2(g) →…

A: Ans -600kj

Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: The standard enthalpy of formation is defined as the change of enthalpy during the formation of 1…

Q: The chemical reaction CaO + H2O Ca(OH)2 is exothermic. This means that: O A. the reaction releases…

A: When a chemical reaction proceeds, older bonds breaks, and new bonds will forms. A chemical reaction…

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Q: An exothermic reaction has A) has a negative ΔH and absorbs heat from the surroundings. An…

A: Based on enthalpy change involved in the reaction , chemical reactions can be classified into two…

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: When 0.361 g of sodium metal is added to an excess of hydrochloric acid, 3750 J of heat are…

A: The given reaction is ,                   2 Na  (s)  +  2 HCl (aq) ---->  2 NaCl (aq)   +  H2 (g)…

Q: 8CO2(g) + S13N4(s) AH = +461.05 kJ 8CO + 2N20 + 3SIO2 a) Is this reaction exothermic or endothermic?…

A: a.) Type of reaction acb be determined form sign of ∆H of reaction.  b.) The type of reaction can be…

Q: 4) The specific heat of copper is 0.385 J/g °C. Using the heat equation, Heat = mass x temperature…

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Q: How much heat (in kJ) is absorbed in the process of making 0.971 mol of CF4 from the following…

A: Carbon reacts with fluorine to form carbon tetrafluoride. The equation for the balanced chemical…

Q: A heat of formation is A) The heat produced in a reaction when 1 mole of a compound is produced. B)…

A: In chemistry, the various types of enthalpies are used to measure the stability and feasibility of…

Q: a. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is…

A: a. The given balanced chemical reaction is  2NH3(g) + 3O2(g) +2CH4(g) →2HCN(g)+6H2O(g) Given data…

Q: Which one of the following reactions would produce the largest amount of heat per mole of oxygen? A.…

A: CH4 (g) + 2O2 (g) →CO2 (g) + H2O (g)                      ∆H° = -802 kJ/mol 2Pb (s) + 3O2 (g) → 2…

Q: How much heat is absorbed in the process of making 0.771 mol of CF4 from the following reaction? C…

A: Consider the given reaction. Cs+2F2g→CF4g

Q: If 200 kJ of heat are supplied, how many grams of NO can be produced? N2(g) + O2(g)→ 2 NO(g) AH =…

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Q: Consider the following reaction:   2 CH3OH(g) → 2 CH4(g) + O2(g)                    DH = 252.8 kJ…

A: NOTE : Since you've posted multiple sub-parts,we'll solve first three sub-parts for you. If you want…

Q: Which statement correctly describes an endothermic chemical reaction? A. The products have higher…

A: First we would define Endothermic reaction then choose the correct option .

Q: C. Ex: Calculate the heat produced by reacting 12.6 g of hydrogen peroxide, H,02. 2 H2O2(aq) → 2…

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Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: Since standard enthalpy of formation of a compound is the change in the standard enthalpy when one…

Q: In a popular television series, the two characters use thermite to assist with breaking into a…

A: The enthalpy change of the chemical reaction when two moles of Aluminium reacted completely is given…

Q: ndothermic reaction a. The reaction absorbs heat. b. The amount of enthalpy change is-140 Kj c. Ha +…

A: 1)  a) the reaction absorbs heat = endothermic  reaction. (In endothermic reactions ,the heat is…

Q: Which of the reactions are exothermic? 2 Mg(s) + O,(g) → 2 MgO(s) + heat O NH, (g) + HCI(g) →…

A: The reaction that releases heat during the reaction,  is called exothermic reaction.

Q: How much heat is liberated at constant pressure if 0.938 g of calcium carbonate reacts with 73.2 mL…

A: Since molar mass of calcium carbonate = 100 g/mol Hence moles of calcium carbonate = mass / molar…

Q: The chemical reaction CaO + H2O → Ca(OH)2 is exothermic. This means that: O A. the reaction releases…

A: The given reaction is : CaO + H2O ---------------> Ca(OH)2  Given this reaction is an exothermic…