1)What is the specific heat if 24.8 g of a metal absorbs 275 J of energy and the temperature rises from 20.2 °C to 24.5 °C? 2)Calculate the enthalny for the combustion of 1.0 mol

Q: The thermochemical equation for the combustion of methanol is CH3OH (g)  +  3/2 O2(g)  →  CO2(g)  +…

A: Here we are required to find the heat produced on burning 5 gm of methanol

Q: e the information to answer the following questions. This reaction is... Suppose 41.0 g of NH3…

A: The given data: 2NH3(g) ==> N2(g) + 3H2(g)∆H° = 160 KJ When ∆H° is positive,  it means heat is…

Q: if 0.0102 moles reacted and 476.5 J of heat were absorbed by the reaction in a coffee cup…

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Q: 2. Write the thermochemical equation when one mole of nitrogen gas, N, reacts with one mole of…

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Q: A chemical reaction in a bomb calorimeter produces 5.17 kJ of heat. If the heat capacity of the…

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Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1) + O₂(g)…

A: In an exothermic reaction, heat is released, and in an endothermic reaction, heat is absorbed.

Q: the change in enthalpy for the reaction of sodium hydroxide with hydro chloric acid is -57.9 kJ. if…

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Q: 3. ) Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42…

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Q: 3) When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized completely by 75.0 mL of 1.0 mol/L…

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Q: if 0.0221 moles reacted and 633.2 J of heat were absorbed by the reaction in a coffee cup…

A: We will calculate the enthalpy of reaction using relation between heat and enthalpy

Q: 4Al(s) + 3O2 (g) --> 2 Al2O3 (s) Δ H = -3351 kJ     How much heat will be released when 85 g of Al…

A: Given thermochemical reaction equation is 4Al(s) + 3O2 (g) --> 2 Al2O3 (s) Δ H = -3351 kJ…

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1)+O2(g) AH=…

A: Given reaction is, 2 HgO (s)  →  2 Hg (l) + O2 (g)                     ∆H = 182 kJ As,  ∆H is…

Q: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s), ΔH = -1652 kJ (d) How much heat is released when 11.40 g Fe and 2.13…

A: In the given question we have to calculate the heat released during the reaction,  First of all, we…

Q: The change in enthalpy for the reaction of sodium hydroxide with hydrochloric acid is -57.9 kJ. If…

A: The heat generated from a reaction can be calculated by the multiplication of mass (m), specific…

Q: How much heat is evolved when 453.5 g of ammonia (NH3) is produced according to the following…

A: Given Reaction is - N2 (g) + 3H2 (g) → 2NH3 (g)                  ΔH= -91.8 kJ

Q: You mix 125ml of 0.180 m csoh with 50.0 ml of 0.450 m hf in a coffee cup calorimeter and the…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: what is the amount of internal energy (in joules) for a system that has performed 1478.714 J of work…

A: The internal energy of a system can be changed in two ways: (i) By allowing heat to flow into the…

Q: If 0.0179 moles reacted, and 793.0 J of heat were absorbed by the reaction in a coffee cup…

A: Given data is  Moles of substance reacted = 0.0179 moles Amount of heat absorbed= 793.0 J  Enthalpy…

Q: When 23.6g of calcium chloride, Was dissolved in water in a constant pressure calorimeter, the…

A: For heat capacity ,heat and temperature ,there is a relation for all: q=c×△TWhere:q= Heat…

Q: 6. A 128g piece of Iridium at 95 C is dropped into a 45.2g of water at 17.3 C. The final temp of the…

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Q: Liquid hydrogen peroxide is an oxidizing agent in many rocket fuel mixtures because it releases…

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

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Q: In a coffee-cup calorimeter, 24.5 g sample of solid KCIO, is dissolved in 200.0 g of water at 15.0…

A: mass of KClO3 = 24.5 g molar mass of KClO3 = 122.55 g/mol specific heat = 4.184 J/g-°C Change in…

Q: CH3OH(g) ---> CO(g) + 2H2(g) DH = +90.7 For a given sample of CH3OH(g), the enthalpy change on…

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

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Q: If a system absorbs 155 kJ of heat from its surroundings and the system does 95 kJ of work on its…

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Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1) + O₂(g)…

A: The definition of an exothermic reaction is one in which the system (where the reaction is taking…

Q: The heat released in a reaction can be used as a source of mechanical power. What industrial…

A: Heat energy can be converted into mechanical energy . So the law of Thermodynamics can help to to…

Q: 4. A 10.0 gram piece of Al, originally at 100°C, is dropped into a calorimeter cup containing 100.0…

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Q: What is the change in energy (in J) for a system that lost 344 J of heat to the surroundings, and…

A: Assume that work (w) is done on the system, so w will be positive.Given:Heat lost, Q  = - 344 JWork…

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 47.3 g…

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Q: ) If a gas absorbs 2.0 J of heat from the surroundings and then performs 15.2 J of work, what is the…

A: • The values provided in the question are:-       i) Quantity of heat absorbed by the gas, Q = 2.0 J…

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

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Q: Under what conditions does the enthalpy change equal the heat of a process

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Q: The complete combustion of propane, C 3H 8(g), is represented by the equation:  C 3H 8(g) + 5 O 2(g)…

A: when the heat is evolved in a reaction then that reaction is known as exothermic reaction.  The…

Q: When a system gives off 100J of heat and the surroundings does 50J of work on the system, what is…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: You mix 125 mL of 0.230 M with 50.0 mL of 0.575 M in a coffee-cup calorimeter, and the temperature…

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Q: If 0.0181 moles reacted, and 372.8 J of heat were absorbed by the reaction in a coffee cup…

A: When 0.0181 mole of the reactant reacts the heat absorbed is = 372.8 J The enthalpy change in kJ/mol…

Q: A certain two-stepP process involves transfer of heat and work between the system and the…

A: From first law of thermodynamics, we have : ∆E = q + w  where ,∆E = change in internal energy.   If…

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

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 412.0 mg sample…

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Q: Given the following thermochemical equations: H2 (g) + F2 (g) → 2HF (g) ΔH = -537 kJ C (s) + 2F2 (g)…

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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.