The sign of ΔH for an endothermic process is ___, because it________

Q: None

A: Step 1:Heat lost by hot water is absorbed by cold water and calorimeters.Q hot = heat released by…

Q: Consider the reaction. 2 H, + 0, → 2 H,0 AHrxn = -484 kJ Which answer best describes the transfer of…

A: Heat released during reaction can be calculated based on limiting agent.   For finding the limiting…

Q: A balanced, generic thermochemical equation is shown below.  A, B, and C are substances involved in…

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Q: Using the reverse reaction, how much heat is required to produce 44.8g of NO using the following…

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Q: Part N Which following statement(s) describes an endothermic reaction? 420 kJ of energy was consumed…

A: Endothermic reactions are those reactions that get completed by absorbing heat.

Q: 3. The density of water at 25 °C is 0.997 g/mL and the density of vegetable oil at this temperature…

A: Endothermic process: it is a thermodynamic process where the enthalpy (H) of the system icreases.…

Q: MUST SHOW ALL WORK AND UNITS 1. The temperature of a 98.7 g piece of metal increases from 17.0 °C to…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: A gummy bear contains 5.24g of sucrose (342.3g/mol). When the gummy bear reacts with potassium…

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Q: In a reaction the total energy of the system decreases by 125 kJ. If the reaction releases 80 kJ of…

A: Given data, Total energy of the system decreases by 125 KJ. So, change in the system's energy (∆E) =…

Q: We allow 73 g of oxygen to react with 85 g of ethane.  The reaction is shown below.  Since the heat…

A: Given - Balanced thermodynamical Reaction -  C2H6 (g) + 7/2 O2 (g) → 2 CO2 (g) + 3 H2O (g) ,…

Q: Please answer question 11 part A and B

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Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(l) → 2 H₂(g) + O₂(g)…

A: In this question we have identify the given reaction is endothermic or exothermic and calculate the…

Q: Based on the thermochemical equation shown below, which statement is corred? C6 H12O6(s) + 602 6…

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Q: In the following reaction, how much heat is generated when 3.21moles of CH4 are burned

A: The negative sign before ∆H0 shows that heat is released from the reaction. Observing the given…

Q: What is the change in internal energy for a system that performs 213 kJ of work on its surroundings…

A: Given, System performs 213 KJ of work on its surrounding And system loses 79 KJ of heat in the…

Q: A chemist measures the energy change AH during the following reaction: Cl₂(g)+H₂(g) → 2 HCl(g) ΔΗ=…

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Q: The question is in the image.

A: Given data 1. C(s) + O2(g) ---> CO2(g), DH = -394 KJ 2. H2(g) + 1/2O2(g) ---> H2O(l), DH =…

Q: Heat is absorbed from an endothermic reaction. O True O False

A: Given statement is False.

Q: Which of the following is an endothermic process? a) water freezing b) propane burning in air Oc)…

A: Exothermic reactions are chemical reactions that release energy in the form of heat, light, or…

Q: A decomposition of hydrogen peroxide into water and oxygen gas is an exothermic reaction. If the…

A: Exothermic reactions are those which releases energy to the surroundings causing an increase in the…

Q: A mixture of butane and oxygen gases are contained in a cylinder with a moveable piston lid. A spark…

A: Given, the gas expands and heat is released by the gas.

Q: When 25.0 g hydrogen gas react according to the following reaction, how many kJ of heat are released…

A: Given thermochemical equation is  CO(g) + 3H2(g)   --> CH4(g) + H2O (g)  ;  ∆Hrxn = – 206 kJ Mass…

Q: Consider the reaction.   2Fe2O3⟶4Fe+3O2.    Δ?∘rxn=+824.2 kJ   The formation of 12.0 g of O2…

A: 2Fe2O3 ——> 4Fe + 3O2          Heat = +824.2 kJ Clearly,  this heat is released when 3 moles of O2…

Q: In a calorimetry experiment similar to the one performed today, a student used 50.0 mL of 1.0 M NaOH…

A: Since you have posted multiple questions, we are entitled to answer the first only. 5) Given:…

Q: The heat of reaction for the reaction A + 2B → 2C is 900. kJ. The heat of reaction for the reaction…

A: For reaction :  A → 2D

Q: A chemical reaction takes place and the H is recorded for reactants as being 200 kJ.  The products…

A: The reaction is a endothermic reaction.

Q: 0.100 moles of an acid is mixed with 0.100 moles of a base in a calorimeter and the temperature of…

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Q: A chemist measures the energy change AH during the following reaction: Cl₂(g) + H₂(g) → 2 HCl(g) Use…

A: An EXOTHERMIC thermochemical reaction equation is written as Reactants ------> products + HeatOr…

Q: Based on the thermochemical equation shown below, which statement is correct? C6H12O6(s) + 602(g) →…

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Q: For a process at constant pressure, 6.20 x 10* calories of heat are released. This quantity of heat…

A: Inorder to convert kilocalorie to joule, multiply the energy value by 4184. So, 1 kcal = 4184 J 1…

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: Select all the following statements about exothermic reactions that are correct. Reactants have a…

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Q: 8. What mass of propane, C3H3, must be burned in order to produce 76,000 kJ of energy? Circle one:…

A: Given, C3H8 + 5O2 ➝ 3CO2 + 4H2O + 2200 kJ mass of propane, C3H8 must be burned in order to produce…

Q: Propane reacts with oxygen gas to produce carbon dioxide and water as shown in the reaction below.…

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Q: In the following reaction, how much heat is generated when 3.21 moles of CH4 are burned? CH: (g) + 2…

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Q: A chemist measures the energy change AH during the following reaction: Cl₂(g) + H₂(g) → 2 HCl (g)…

A: Given reaction : Cl2(g)+H2(g)→2 HCl (g) ΔΗ=-184. kJ