The change in energy of the reaction is about kilojoules.

Q: While flying in a plane 30K above sea level, a skydiver prepares for a jump. His energy of position…

A: Applying concept of kinetic and potential energy.

Q: What does the First Law of Thermodynamics state? a) Some types of energy can be created in enzyme…

A: we have to select the correct statement for First law of thermodynamics

Q: An exothermic reaction is one where none of the above heat is transferred from the surroundings into…

A: Exothermic reaction is a type of chemical reaction in which energy or heat is released in the form…

Q: Discuss how catalysts can make processes more energyefficient.

A: A catalyst is substance that can be added to a chemical reaction without getting consumed in a…

Q: Instant hot packs work by crystallizing sodium acetate (NaCH;COO). The molar enthalpy of…

A: M

Q: how is the caloric value of a food sample determined?

A: Calorific value is defined as the amount of energy contained in per Kg of the food.

Q: If a reaction takes place in a water-based calorimeter and the temperature of the water increases,…

A: given  water bases calorimeter Temperature of water is increasing Nature of Reaction = To be…

Q: A chemical reaction shifts left upon heating. What does that tell you about the enthalpy of…

A: If reaction is endothermic heat is required to form product and reaction is written as Reactant +…

Q: n order to obtain the largest possible amount of heat from achemical reaction in which there is a…

A: Does the reaction under conditions of constant volume or constant pressure have to be carried out or…

Q: Think about the metals aluminum and magnesium and the ions they form. Why might one metal be more…

A: Considering Aluminium and magnesium: The atomic number of Mg=12 Electronic configuration: 1s2 2s2…

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

A: i) The given reaction is: 2HgO(s)→2Hg(l)+O2(g)                                ∆H=182 kJ Since ∆H of…

Q: A

A:

Q: If the reactants have a potential energy of 10.2 kj/mol and the products have a potential energy of…

A: Given, Potential energy of products, EP = 15.7kJ/mol Potential energy of reactants, ER= 10.3 kJ/mol…

Q: what is the heat reaction to for the decomposition of methanol to carbon monoxide and hydrogen gas?

A: The objective of this question is to determine the heat of reaction, also known as the enthalpy…

Q: 7. Suppose you have an endothermic reaction with Keg = 1x 103. How could you adjust the temperature…

A:

Q: Surrounding Reaction A Reaction B Temperature Initial Temp 25.1°C 25.1°C Final Temp 30.2°C 20.0°C…

A:

Q: a. N2 (g) + 3Cl2(g) → 2NCl3(g) ΔHo = 460 kJ/ mol; ΔSo = - 275 J/ K b. N2(g) + 3F2(g) → 2NF3(g) ΔHo =…

A: Here given multiple question...

Q: P4(s) + 10 Cl2(g) → 4 PCl5(s)     ΔH = −1821 kJ When  [X] g of P4 react, 1821 kJ are released…

A:

Q: Can a chemical reaction ever give off more energy than was originally contained in its reactants?

A: According to law of conservation of energy, energy can neither be created nor be destroyed. It can…

Q: All reactions are endothermic. O True O False

A: All reaction are endothermic, this statement is totally false.

Q: Thermal energy is: A form of kinetic energy. A form of potential energy. Consists of both potential…

A: Thermal energy is: A form of kinetic energy. A form of potential energy. Consists of both potential…

Q: 21. Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 45 g of…

A: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/molHere combustion of…

Q: What quantity of energy is needed to heat a 1.00 mole sample of H2O ‍ from  -30.0 degrees C to 140.0…

A: Since in heating H2O ‍from -30 0C to 140 0C following steps will happen 1) Heating of ice from -30…

Q: The heat of solution (ΔHsolution) for silver nitrate is +36.91 kJ/mol. Although this process is…

A: If ∆G for a reaction is negative then the reaction is spontaneous.

Q: The thermochemical equation for the formation of methyl alcohol indicates that 239 kJ of energy is…

A:

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.