When NO(g) reacts with O₂(g) according to the following reaction, 13.93 kcal of energy are evolved for each mole of NO(g) that reacts. Complete the following thermochemical equation. 2NO(g) + O₂(g) 2NO₂(g) ΔΗ = kcal

Q: What is the kinetic energy of a baseball with a mass of 117.7 g traveling at a speed of 1.377 m/s?

A: Given, Mass of a baseball (m) = 117.7 g = 0.1177 kg Speed of a baseball (v) = 1.377 m/s Kinetic…

Q: Which sample will reach the lowest final temperature when all samples evolve 12.5 J of heat and all…

A: Since, Q =m.c.St WHERE Q = heat energy M =mass of metal C= specific heat of metal Triangle T =…

Q: N2(g) + O2(g) + energy2NO(g) Identify each of the following as a product or a reactant: O2(g)…

A: Given reaction : N2 (g) + O2 (g) + energy → 2NO (g)

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: The reaction for the combustion of propane is C₂H₂(g) +50₂(g) → 3 CO₂(g) + 4H₂O(1) heat: ΔΗ =…

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

Q: Which of the following processes is exothermic?   frying chicken the formation of dew in the morning…

A: Endothermic reactions are the chemical reactions that absorbs heat energy during chemical reaction.

Q: hore total energy than the reactants, the AG will be and if the reactants have more total energy…

A: Delta G is given as energy of product - energy of reactant  ΔG = GProduct - Greactant

Q: Suppose you burn a 2.6 g sample of potato chips. You use the heat given off from that process to…

A: Given: The mass of the potato chips burned = 2.6 g The amount of water = 26.0 g The initial…

Q: If 63.50 g of an unknown metal at 97.6 °C initially produced a resulting temperature of 39.5 °C when…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Perform the conversions between energy units. 663 kJ=663 kJ=   JJ 2655 kcal=2655 kcal=   kJkJ…

A: Unit conversion of the energy:        1 kJ = 1000 J 1kcal = 4.184 kJ

Q: A student performs a calorimetry experiment. The student combines 100. g of 0.40 M HC1(aq) with 100.…

A: Heat absorbed by the particular species = mass × heat capacity × temperature change

Q: The experimental ?H is -213 kcal/mol. How much heat is released during the combustion of 45.3 grams…

A: We have to find the heat released

Q: Is the following reaction exothermic or endothermic? Choose the correct answer and reasoning. 2 SO3…

A: Ans b ,endothermic  ,because energy was added to the reaction as a reactant . In endothemic…

Q: A teaspoon of the carbohydrate sucrose (common sugar) contains 15.6 Calories. What is the mass of…

A: The problem is asking us to find the mass of sucrose in a teaspoon, given that a teaspoon of sucrose…

Q: How many kilojoules are released when 124 g of Si reacts with chlorine?…

A: First convert mass into mole by dividing molar mass then calculate mole mole relationship to get…

Q: Convert 27.0 kJ to calories. Hint: Notice the little c in calories. 1 calorie = 4.184 joules 1…

A:

Q: A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial…

A: This problem is based on calorimeter where we need to find out Caloric value of the French…

Q: A 8.33 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: Given the following potential energy graph, identify the correct statement. Energy CO + 2 H2 AH =…

A: Potential energy digram represent the graph of change in potential energy of reactant converted into…

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

A: Given statement is False.

Q: Using the reaction given below, how much energy is produced during the reaction of 72.5 g Cl₂ and…

A:

Q: How many grams of NH3 are used when 798 kJ is released? AH = -90.0 kJ/mol CaCO3 + 2 NH3 → Ca(CN)2 +…

A: The problem is asking us to find out how many grams of NH3 are used when 798 kJ of energy is…

Q: Would the following reaction be endothermic or exothermic? Why? CH4 + O2 --> CO2 +H2O + Energy…

A: Ans: Exothermic because energy is a product.

Q: A)When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following equation, 108…

A:

Q: Consider the reaction, C2H4(g) + H2(g) → C2H6(g), where ΔH = –137 kJ. How many kilojoules are…

A: The reaction of alkene with hydrogen is called as hydrogenation. The energy change that is…

Q: Which of the following represents an endothermic reaction? CH4 (g) + 202 (g) → CO2 (g) + 2H2O (g) +…

A: Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the…

Q: if 11.2 g of H2 (g) (MM = 2.016 g/mol) were to react according to the balanced equation given below,…

A:

Q: Convert 39.0 kJ to calories. Hint: Notice the little c in calories. 1 calorie = 4.184 joules 1…

A: Given that : We have to convert 39.0 kJ to calories. Also, 1 calorie = 4.184 joules 1 Calorie = 1000…

Q: What is the specific heat of a 42.01 g piece of an unknown metal that exhibits a 45.2 °C temperature…

A:

Q: 2 H NaOH, ethanol heat

A: NaOH is a base. It absorbs acidic protons. The produced carbanion will carry the reaction.

Q: Perform the conversions between energy units. 633 kJ = 2325 kcal %3D kJ 9.01 x 10 J = kcal

A:

Q: A 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: GivenMass of unknown salt = 6.61 gMolar mass = 116.82 g/mol

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.