Consider the following reaction C3H8 + 5 O2 --> 3 CO2 + 4 H2O If the overall reaction has an enthalpy of reaction of -2220 kJ/mol, and water has a heat of formation of -286 kJ/mol, what mass of water is produced when 3500 kl of energy is released! 0.35 g 28 g 114 g 881 g

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A:

Q: The decomposition of 10.0 g of ammonia requires 27,200 J of energy to give hydrogen and nitrogen…

A: Heber process: It is the industrial technique to produce ammonia from nitrogen and hydrogen gas. The…

Q: mol

A: The combustion reaction is given as: CH4 + 2O2  ---> CO2 + 2H2O   When 8.01 gram of CH4 are…

Q: how much energy in kilojoules is produced when 1.00 g of propane is completely combusted?

A:

Q: Sucrose, C12H»011 is oxidized in the body by O2 via a complex set of reactions that ultimately…

A:

Q: How much heat is released by the formation of 18.0 g of CaCO,? Show the conversions required to…

A:

Q: of

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

Q: The curve given below shows what type of reaction? If Energy of reactants is 90 KJ and Energy of…

A: Enthalpy change is the difference between the enthalpies of products and the enthalpies of reactants…

Q: If AH = -54.74 kJ for a chemical reaction, that reaction O is endothermic cannot occur is exothermic

A: In endothermic reaction heat is require while in exothermic reaction heat is given off.

Q: a. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is…

A: The question is based on the reaction stoichiometry. evolution of heat means production of heat.…

Q: For the reaction H2(g) + 1/2 O2(g) --> H2O(g), DHo = -241.8 kJ/mol. what mass of H2(g) in grams is…

A: To solve this problem we have to use the given thermochemical equations. First we have to write the…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) – N,(g)+3H,(g)…

A:

Q: How much heat will be released (∆H) if 1.20 mol of SrO is mixed with 0.951 mol of CO₂ in the…

A: Let x be the number of moles at CO2 required by 1.2 mol of SrO 1.2 mol of SrO requires 1.2 moles of…

Q: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: During an endothermic reaction, H for the reactants was −600 kJ/mol. Which of the following…

A: Note - Since you have asked multiple question, we will solve the first question for you. If you…

Q: For the reaction H2(g) + 1/2 O2(g) --> H2O(g), DHo = -241.8 kJ. What quantity of heat, in kJ,…

A: Balanced Reaction H2(g) + 1/2 O2(g) --> H2O(g) Here heat is released during the reaction.

Q: The reaction between nitrogen and oxygen gases require the absorption of 43 kJ of energy per mole of…

A:

Q: 23.  If a reaction produces 1.506 kJ of heat, which is trapped in 30.0 g of water initially at 26.5…

A: Calorimeters play a major role in estimating reaction's heat with the known specific heat of…

Q: Given the thermo-chemical equation N, (g) + 3 H, (g) → 2 NH, (g) AH = -91.8 kJ %3D How much energy…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is as…

Q: 8. Consider the reaction: C,H1,O(s) + 60;(g) → 6CO:(g) + 6H;0(1) , the heat change q for this…

A: When the energy of the products is smaller than the reactants or the system releases heat in the…

Q: The heat released when one mole of water is formed from the elements is 1,198 kJ. An experiment was…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g), ΔH = –434 kJ Based on the above reaction, what energy change…

A:

Q: 6.8 What mass of butane in grams is necessary to produce 1.5 X 10' kJ of heat? What mass of CO2 is…

A: The balanced chemical equation for the combustion of methane is, C4H10+132O2→4CO2 + 5H2O 58 g of…

Q: If a reaction occurs in 100g of water that raises the temperature of the water from 20°C to 30°C,…

A:

Q: The highly exothermic thermite reaction, in which aluminum reduces iron(ll) oxide to elemental iron,…

A: Heat released and absorbed in a chemical reaction is function of the numbe of moles of reactants…

Q: NH3(g) + H2O(g) 02(g) --> _- NO(g) + -- Based on the enthalpies of formation, how much energy, in…

A: Given unbalanced equation is :  NH3 (g) + O2 (g) ----------> NO (g) + H2O (g)  Given mass of NH3…

Q: The reaction releases 251 kJ of heat. What is the AH for the reaction written? kJ/mol as

A: Given information: Mass of liquid methanol = 11.08 g Heat released (q) = 251 kJ

Q: The reaction between hydrogen and fluorine gas proceeds according to the reaction equation H2(g) +…

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

Q: 6.72 Many portable gas heaters and grills use propane, CHg(g), as fuel. Using standard enthalpies of…

A: Answer 6.72 The combustion reaction of propane is as follows This process follows Hess's Law.…

Q: Many cigarette lighters contain liquid butane, C4H10(l), which has a ∆Hƒ = -147.6 kJ/mol. Burned in…

A: Given,*…

Q: The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase…

A: Reactions giving out heat are termed as exothermic and these are always associated with a specified…

Q: The common fertilizer NH,NO;(s), can explosively decompose according to the following reaction. What…

A: Mass of NH4NO3 = 80.06 g

Q: How much energy is required to change 50.0 g of water form 20.0oC to 75.0 oC

A:

Q: Use Reaction 2.   How much energy (in kJ) is released when 56.0 g of oxygen difluoride decomposes?

A:

Q: Constants | Periodic Table Chemical energy is released or absorbed from reactions in various forms.…

A: In the given question we have to calculate the heat absorbed when 3.50 mol of A reacts with B. The…

Q: 2. A 35 g metal ball made up of a mixture of element X and element Y is heated up to 77C and dropped…

A:

Q: 3. The equation for the combustion of octane is: 20H18) + 250, e16CO) +18H,0 AH - -10.900 kJmol ()…

A: Number of moles of octane required to produce 10900 KJ of energy = 1 mol Number of moles of octane…

Q: 01. The enthalpy change in a reaction is 1366 kJ per mole. Should the enthalpy of the combustion…

A: There are 2 types of reactions that are classified based on enthalpy change: Endothermic reaction…

Q: The reaction N2(g) + 3H2(g) --> 2NH3(g) at 400.0°C has an associated heat of reaction -92.22 kJ/mol.…

A: The given chemical reaction is as follows: N2(g) + 3H2(g) → 2NH3(g)                    ∆Hr=-92.22…

Q: b. ,mass 4. If a pool and a cup of water had the same temperature, which would have greater therma…

A:

Q: The combustion of propane gas (C3H8; molar mass = 44.09 g/mol) occurs according to the following…

A: The balanced Chemical equation for combustion of propane gas given in question is - C3H8(g)  +…

Q: Determine the amount of heat (in kl) given off when 1.86 x 10° g of NO, are produced according to…

A: When a chemical reaction occurs the reactant converts into products. Sometimes energy is released…

Q: 15. The combustion of methane, CH4, releases 890.4 kJ/mol according to the reaction: CH4(g) + 20z(g)…

A: Given, Chemical Equation: CH4 + 2O2 ---> CO2 + 2H2O  ∆H = -890.4 KJ

Q: Using the equation for photosynthesis below, answer the following equations 2800KJ + 6 CO2 (9) + 6…

A: Given: Given photosynthesis reaction: 2800 kJ+6CO2(g)+6H2O(l)→C6H12O6(s)+6O2(g)

Q: Magnesium sulfate is often used in first-aid hot packs, giving off heat when dissolved in water. A…

A: Given:Volume of water=15.0 mLMass of MgSO4=2.00 gHeat evolved=1.51 kJDensity of solution=1.00…

Q: Propane (C3H8) is the commonly used fuel in our barbeques at home. It is a great fuel because it…

A:

Q: AH° = -1670 kJ/mol 2. For this unbalanced chemical reaction: X(s) + 3/2 Y2(g) → X₂Y3 (Sh 1.…

A: Recall the given reaction,                                            X s  +  3/2 Y2 g  →  X2Y3 s…

Q: Consider the following reaction: C3H8 + 5 O2 --> 3 CO2 + 4 H2O If the overall reaction has an…

A: Enthalpy of reaction = -2220 KJ/mole  This means that 2220 KJ heat is released when 1 mole of C3H8…

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.