How many grams of CaHe liquid must decompose according to the following chemical equation to transfer 430 kJ of heat? CeHe(1) 3 CaHa(g) AH = 630 kJ

Q: Answer the questions about the balanced reaction 3A + 2B 1 C + 100. cal C = 70.g The molar masses…

A: Given, molar mass of A= 10 g  Molar mass of B = 20 g  Molar mass of C = 70 g  Given reaction is-  3A…

Q: Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl,(g) – 2 MCI, (s)

A: Step : 1             Find the enthalpy of the reaction.

Q: Nitric acid is neutralized with potassium hydroxide in the next reaction. HNO3(aq) + KOH(aq) →…

A: We will first determine the mass of solution by adding the volume and multiplying density. And we…

Q: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 305 kJ of…

A: Given reaction is CH4 + 2O2 —> 2H2O + CO2      ΔH = -890 kJ/mol 2 mol H2O produced releases 890…

Q: In order to produce 823 kJ of heat, how many grams of H2 must be combusted with excess O2? (molar…

A:

Q: How much heat is produced by the combustion of 4.67g of magnesium (24.30 g/mol)? Mg(s) + 1/2 O2(g)…

A: Here we have to apply mole concept, first we need to find for 1 gram Mg combustion how much energy…

Q: Calculate the quantity of heat released when 4.00 g of CH4(g)are burned in excess oxygen according…

A: Methane react with oxygen and produced one mole of carbon dioxide and two mole of water

Q: The energy diagram shown represents the chemical reaction between solid ammonium c octahydrate:…

A: The heat absorbed is to be calculated

Q: A 0.562 g sample of KCl is added to 35.8 g of water in a calorimeter. If the temperature decreases…

A: The heat capacity of the resulting solution is 4.18 J/goC, which states that 4.18 J of energy will…

Q: The combustion of propane may be described by the chemical equation C;H¿(g) + 5 0,(g) 3 CO,(g) + 4…

A: This question can be solved using law of multiple proportions.

Q: Camels store a fat called tristearin (C7H₁006) in their humps. The breakdown of tristearin provides…

A:

Q: Determine the amount of heat (in kJ) associated with the production of 1.76 × 104 g of NO2 according…

A: Molar mass of nitrogen dioxide is 46 g/mol

Q: (a) Define specific heat. Specific heat is defined as the quantity of heat required to raise the…

A: Specific heat is defined as the quantity of heat required to raise the temperature of 1 gram of a…

Q: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: How much heat is generated if 20 grams of hydrogen is consumed in the following reaction?   2H2…

A: Given that:  Combustion reaction of H2 2H2 + O2 .....> 2H2O + 570KJ  In this reaction 570KJ…

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

A: The reactions in which heat energy is released from the system are known as exothermic reactions.…

Q: In order to produce 842 kJ of heat, how many grams of hydrogen gas must burn in the reaction below?…

A: Given reaction: 2H2(g) + O2(g) → H2O(g)     ∆H = -486 kJ Since ∆H is negative, the reaction is…

Q: when I do this my final answer is 4903 grams which seems really high. Where am I going wrong?

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

Q: Given the equation below, which of the following is true? 2 Mg(s) + O2(g) → 2 MgO(s) + 72.3 kJ 12.…

A: 2Mg + O2->2MgO+72.3KJ

Q: When hydrogen and oxygen are burned to produce water, heat is produced at the rate of 58 kcal/mole…

A: Given, 1 mol H2O = 6.022 ×1023 molecules  Heat produced = 58 Kcal/mol

Q: Nitric acid is often manufactured from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: NH3 is formed from Haber process ..

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: How much heat is absorbed during production of 102 g of NO by the combination of nitrogen and…

A: Molar mass NO = 30.01 g/mol

Q: When hydrogen and oxygen are burned to produce water, heat is produced at the rate of 58 kcal/mole…

A: Given: Heat produced per mole of water = 58 Kcal/mol of water. And 1 mole of water contains = 6.02 ×…

Q: he enthalpy change for the reaction of hydrogen gas with iodine to produce hydrogen iodide is 53.1…

A: Given reaction is,   H2(g)   +   I2(s)   ----->  2 HI(g)     ΔH = 53.1 kJ

Q: How much energy is released when 7.00 mol iron is reacted with an excess oxygen?   4 Fe+ 3 O2 → 2…

A: Given reaction is : 4 Fe+ 3 O2 → 2 Fe2O3    ...ΔH = -1652 kJ To calculate:  Energy released = ?…

Q: What is revealed in the reaction Ca2*(aq) + 20H(aq) → Ca(OH)2(s), AH = 16.71? A. The reaction is…

A:

Q: When a 7.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) 2 MCI, (aq) + 3…

A: We need to obtain the equation with the unknown enthalpy change from the equations with the known…

Q: A student decides to find the molar enthalpy for the reaction between phosphoric acid and calcium…

A:

Q: 5. The molar heat of neutralization from hydrochloric acid and sodium hydroxide is –57.3 kJ/mol. Use…

A: The chemical reaction taking place is: HCl + NaOH → NaCl + H2O The given information is: Heat of…

Q: Calculate AH when 9.23 x 10 4mol of AgCl dissolves in water. Express your answer in joules to three…

A: We have to find the ∆H on addition of AgCl

Q: when butane (C4H10) in a cigarette lighter undergoes combustion, it evolves 2880 kJ per mole of…

A: When butane (C4H10) in a cigarette lighter undergoes combustion, it evolves 2880 kJ per mole of…

Q: 5. What is AH for BaCO3 (s) →→→ BaO (s)+ CO₂ (g) Given reactions 2 Ba (s)+O, (g) → 2 BaO (s) Ba (s)…

A: Since,According to Hess's law change of enthalpy in a chemical reaction is same regardless of…

Q: Your lab partner accidentally mixed some sodium chloride with your sample of Epsom salts…

A: Given data: Mass of hydrated salt = 100 gmMass of Anhydrous salt = 55.25 gmThe molar mass of water =…

Q: In a constant-pressure calorimeter, 70.0 mL of 0.300 M Ba(OH)₂ was added to 70.0 mL of 0.600 M HC1.…

A: The question is based on the concept of chemical thermodynamics . we have been given experimental…

Q: A 5.90-g chunk of potassium is dropped into 1.00 kg water at 24.7°C. What is the final temperature…

A: 1.A 5.90-g chunk of potassium is dropped into 1.00 kg water at 24.7°C. 2. Tobfind out the final…

Q: Consider the following reaction: 2 H2(g) + O2(g)  2 H2O(l) Answer the following questions: (a) How…

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Q: A household water heater containing 50 gallons (227 L) of water is heated burning natural gas…

A: Given: Volume of water heated = 227 L Initial temperature of water = 25.0 oC Final temperature of…

Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

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Q: f the heat of precipitation of barium sulfate is -1473.2 kJ/mol, what is the heat of solution…

A: A chemical equation can be added, subtracted, multiplied, or divided similar to an algebraic…

Q: When 13.99 mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given data: Volume of HCl used = 13.99 ml Volume of NaOH used = 15 mL Concentration of NaOH = 3.172…

Q: How much heat is released when 4.19 mL of 0.54 M HBr reacts with 23.50 mL of 0.0695 M Ba(OH)₂? 2…

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Q: If 200 kJ of heat are supplied, how many grams of NO can be produced? N2(g) + O2(g)→ 2 NO(g) AH =…

A:

Q: Your lab partner accidentally mixed some sodium chloride with your sample of Epsom salts…

A: The number of moles for a given compound or a molecule refers to the ratio of the mass to that of…

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.