What can you notice in relation to chemical bonds by changing the potential energy of reactants and products for our exothermic reaction? Choose from the

Q: How would I solve for the mass ( in grams )

A: Given,Heat absorbed = 45.5 JMass of sample = ?Specific heat of sample = 0.82 J/g KChange in…

Q: The combustion of octane is an exothermic reaction. Which statement is true for an exothermic…

A: The true statement for exothermic reaction is

Q: 4.by touching the side of a beaker a student concludes that an exothermic change is taking place…

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Q: A chemist measures the energy change AH during the following reaction: Cl,(9)+H,(9) → 2 HCl(g)…

A: A chemical reaction in which heat releases is known as exothermic reaction  A chemical reaction in…

Q: What would likely happen if you were to touch the flask in which an endothermic reaction was…

A: The reactions in which enegry is absorbed are known as endothermic reactions.

Q: closed system includes a cup of warm water and an ice cube that was just placed inside of it. Which…

A: Here closed system means it is assumed that the system is isolated from surrounding i.e. mass and…

Q: A chemist measures the energy change ΔH during the following reaction:…

A: The reaction is, C3H8 + 5O2 -----> 3CO2 + 4H2O ∆H = -2220 kJ Since the change in enthalpy is…

Q: A 1.69 gram sample is heated to an initial temperature of 75 oC. The sample is then placed in a…

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 308. kJ during a…

A:

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A: Dear student I have given answer to your question in the image format.

Q: Which of the following statements is true?  a When heat is absorbed by a system, the reaction is…

A: Which of the following statements is true ?

Q: Rashaun adds a white crystalline solid to water in a beaker. When he picks up the beaker, he…

A: Given that, after adding white crystalline solid to the water, the solution feels cold. It means the…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 225. kJ during a…

A: a.) To Calculate the change in energy of the gas mixture , we would use first law of thermodynamics.…

Q: What is the difference between an exothermic and endothermic reaction? Could it be possible to…

A: An exothermic reaction is a chemical reaction, where energy is released during the reaction.…

Q: Which of the following best explains why the combustion reactions represented in the table are…

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

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: 10 heat content in the surroundings of an exothermic reaction increases, because the reaction…

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

Q: They are all one question. When a solid dissolves in water, heat may be evolved or absorbed. The…

A: Given, When 5.21 g of CsClO4(s) are dissolved in 114.80 g of water, the temperature of the solution…

Q: What is the result of mixing hydrochloric acid with sodium hydroxide? Group of answer choices This…

A: The reaction of hydrochloric acid with sodium hydroxide is an example of acid base reaction.  Where,…

Q: Which of the following statements is true about an exothermic reaction? 1. We can determine the…

A: An exothermic reaction is the one that releases energy during the reaction. This can be observed…

Q: Which of the following describes any heat flow that occurs in a well-sealed coffee cup calorimeter?…

A: In a well sealed coffee cup calorimeter, the energy gained or lost by the surroundings is equal to…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g) + 3H₂(g) ΔΗ…

A: Here for that reaction ∆H = 160 kJ As , ∆H is postive value so , we can say it is endothermic…

Q: In a calorimeter, the components of the measuring apparatus that serve to either provide heat or…

A: Calorimeter consists of a system and surrounding between which the exchange of heat energy takes…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 338. kJ during a…

A: Enthalpy change(∆H) = 338 KJ Work (W) = +135 KJ (positive because work done on the system)

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 219. kJ during a…

A:

Q: Is the reaction exothermic or endothermic will any he be released or absorbed. If you said heat will…

A: Given:Mass of CH4 = 87.8 g.Chemical reaction:

Q: Which of the statements is true of the energies of the bonds that break and form in an exothermic…

A: Exothermic reactions are the reactions which involves the release in heat after the completion of…

Q: Which of the following statements is correct if a reaction is carried out at constant pressure? O…

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Q: Which of the statements is true of the energies of the bonds that break and form in an endothermic…

A: Bond formation in endothermic reaction

Q: combustion for each of the gases and then balance. Are these reactions endothermic or exothermic?…

A: Hydrocarbons burns in presence of air to give CO2 and water.  C3H8 + 5O2 -> 3CO2 + 4H2O + heat…

Q: Which of the following processes always results in an increase in the energy of a system? The system…

A: The energy of the system depends on the heat gained or lost and work done on or by the system.

Q: We saw in the calorimeter experiment that the combustion of a fuel is exothermic. What can you then…

A: We saw in the calorimeter experiment that the combustion of a fuel is exothermic. What can you then…

Q: Write the thermochemical equation for: a. Heat energy of 849.0 kJ is absorbed when 2 mol carbon…

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

Q: A 1.200 g sample of ZnCO3 (s) dissolved in 40.0 mL of a dilute HCl solution (density = 1.10 g/mL) in…

A: The required equation is given below.

Q: Which of the statements is true of the energies of the bonds that break and form in an exothermic…

A: Concept: To break a bond, energy is required When bonds are formed, energy is released. In the case…

Q: Which statement is correct for the characteristics of an endothermic reaction? Select one: a. There…

A: There are two types of reaction are present -  1) Endothermic reaction  2) Exothermic reaction In…

Q: For an exothermic reaction, how is the measured temperature change affected if some of the heat…

A: Consider that an exothermic reaction is taking place inside a calorimeter with water as its…

Q: Is the reaction exothermic or endothermic will any he be released or absorbed. If you said heat will…

A: Reaction that gives out heat , which is accompany by evolution of heat are called exothermic…

Q: Consider the following equation:        2C2H2(g) + 5O2(g) ->4CO2(g) + 2H2O(g) + energy        (a)…

A: as per Q&A guidelines of portal I solve first question because it comes under multiple question…

Q: What is the working definition of enthalpy change?     A)  The change in energy that occurs when…

A: Enthalpy change (∆H) is a state function.

Q: Nitrogen gas and oxygen gas can combine to form nitrogen monoxide gas. Nitrogen monoxide gas can…

A: Energy taken for the reaction N + O2 ----> NO2 Is equals to the to energy taken by the two…

Q: Which statement is incorrect about an endothermic change in a chemical reaction? O a) potential…

A: Here we have to find the incorrect statement about an endothermic reaction among the given…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 254. kJ during a…

A: Given :- Q = +254 KJ positive because energy is absorbed by system W = +185 KJ positive because work…

Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

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Q: A balanced chemical reaction that includes the energy change during the reaction is called the…

A: Amount or quantity of heat absorbed or released during a thermodynamic process at a fixed value of…

Q: Ammonia is made from nitrogen and hydrogen. The enthalpy change in the reaction is -92 kJ/mole. The…

A: In this reaction  One molecule of nitrogen and three molecules of hydrogen reacts to form two…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 365. kJ during a…

A: Answer: This question is based on the first law of thermodynamics which is based on the conservation…

Q: heat content in the surroundings of an exothermic reaction increases, because the energy contained…

A: An exothermic reaction is a chemical reaction where the reactants release heat and form the product.…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.