1. Which of the following are state functions? (a) The volume of a balloon (b) The time it takes to drive from your home to your school (c) The temperature of the water in a coffee cup (d) The potential energy of a ball held in your hand (e) The pressure of a bicycle tire

Q: What are the basic concepts of a calorimeter?

A: The basic concepts of a calorimeter should be written.

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: If the mass of a truck is tripled-for example, when it is loaded-by what factor does the kinetic…

A: The mass of the truck is tripled then the kinetic energy will be, From the equation, KE=12mv2where,…

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, 0,, a large amount of heat energy is…

A:

Q: How much heat will be released (AH) if 0.4391 mol of NHs are mixed with 0.20 mol of O2 in the…

A: Change in enthalpy (∆H) is proportional to the number of moles of reactants and products associated…

Q: How many moles of H₂ are required to produce -3651 kJ of heat in the following reaction? N₂ (g) + 3…

A: Mole of H2 needed = 117.35 mole

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: If the mass of a truck is tripled-for example, when it is loaded-by what factor does the kinetic…

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Q: How many grams of C̟H, liquid must decompose according to the following chemical equation to…

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Q: How much heat will be released (∆H) if 0.4501 mol of NH₃ are mixed with 0.20 mol of O₂ in the…

A: This problem is based on the concept of limiting reagent.

Q: How many moles of H₂ are required to produce -2051 kJ of heat in the following reaction? N₂ (g) + 3…

A: Heat of reaction is difference of energy of product  and energy of Reactant. If heat of reaction is…

Q: What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x…

A: Combustion reaction of benzene  2C6H6 + 15O2 ....> 12CO2 + 6H2O It is exothermic reaction.  dH =…

Q: If 427 J of enesgy is indirectly converted to chemical energy, which is then converted to mechanical…

A: According to the law of conservation of energy the, the energy can never be created nor be destroyed…

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

A: The balanced reaction taking place is given as, => N2 (g) + O2 (g) -----> 2 NO (g)…

Q: Using the values provided in the table, convert the molar heat capacity (Cm) of aluminum to the…

A: Molar heat capacity is defined as the amount of heat required to raise the temperature of one mole…

Q: 4. What is the specific heat of iron, if it requires 1050 J of heat energy to raise the temperature…

A: Heat required = 1050 J Initial temperature = 10.0°C Final temperature= 20.4°C Change in temperature…

Q: 2. What is the heat capacity of 25.0 g of ethyl alcohol if its specific heat is 2.42 J/g C?

A: Given is 25.0 g ethyl alcohol  Heat capacity  = Hc = 2.42 J/g°C Specific heat = ?

Q: From the given chemical equation, solve for the heat evolved (in k]) when 78.96 g of carbon dioxide…

A:

Q: 7. When 0.63 g of solid LiCI (AHsoln = – 37.1 kJ/mol) dissolves in 5 L of water, how much heat is…

A: Answer :-  Heat released (q) when 0.63 g LiCl dissolved in 5 L water = -552.8 (J) = -0.5528 (kJ)…

Q: How much heat will be released (∆H) if 0.1665 mol of NH₃ are mixed with 0.20 mol of O₂ in the…

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Q: Calculate the total energy when 7.25 grams of ethanol undergoes combustion.

A: Combustion is a process of burning in presence of oxygen. The reaction for the combustion of ethanol…

Q: Consider the reaction: C3Hg(g) +5 02(9) 3 CO(9) + 4 H20(g), where AH= -531 kcal/mol. How much heat…

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Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g･°C) that…

A: Q = heat =801 J ΔT = change in temperature = (120 - 22.5) = 97.5 oC c = Specific heat = 0.45 J/goC…

Q: For the combustion of methane(CH4)   CH4 (g)  + 2 O2 (g)  -->  CO2 (g) + 2H2O (g)       Δ H = -882…

A: In a thermochemical equation, the term, ∆H , represents the change in heat energy per mol reaction.…

Q: AU

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Q: 105 The heat change that accompanies the formation of 1.00 mol of carbon dioxide from its elements…

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Q: 1.64 L of hydrochloric acid are mixed with 735 mL of ammonia in a calorimeter. The initial…

A: Solution - According to the question - Given - 1.64 L = 1.64 * 10000 = 1640 ml Total volume = 1640 +…

Q: The following thermochemical equation is for the reaction of ammonia(g) with oxygen (g) to form…

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Q: How much heat will be released (AH) if 0.5263 mol of NH3 are mixed with 0.20 mol of O, in the…

A: Balanced equation: 4NH3 (g) + O2 (g) --------->  2N2H4 (g)  +  2H2O (g)    ∆H° = -286 kJ/mol This…

Q: How many moles of H₂ are required to produce -3451 kJ of heat in the following reaction? N₂ (g) + 3…

A: We have given that N2(g) + 3H2(g) -----> 2NH3(g) ∆H = -91.8KJ/mole

Q: (5: 2 pts): What is a state function? Give and discuss an example that relates to chemistry.

A: A state function is a variable or properties of a system that defines the state of a system.

Q: How many moles of H, are required to produce -4551 kJ of heat in the following reaction? N, (g) + 3…

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Q: b.Calculate the specific heat (J/g C) of Aluminum,

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Q: How many moles of KCIO, solid must be reacted according to the following balanced chemical reaction…

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Q: In the following reaction, how many moles of CH₃OH are required to produce -1761 kJ of heat? 2 CH₃OH…

A: Given, the chemical reaction as follows,2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)  ,   ∆H° =-1280 kJwe are…

Q: How much heat is produced when 6.26 g of zinc metal reacts with oxygen gas under standard…

A: Given, 2Zn(s) + O2(g) → 2ZnO(s) Standard enthalpy of formation of species are; Species…

Q: In the following reaction, how many moles of CH3OH are required to produce -2191 kJ of heat? 2 CH3OH…

A: The balanced reaction taking place is given as,

Q: What is the heat, q, in joules transferred by a chemical reaction to the reservoir

A: Given :-  mass = 155 g  Initial temperature = 22.0°C  Final temperature = 26.5 °C  Specific heat…

Q: How much heat (kJ) is released by a 200-gram piece of silver as it cools from 1023°C to 300°C?

A: Given :-  Mass of piece of silver (m) = 200 g  Initial temperature (T1) = 1023°C  Final temperature…

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: From a molecular viewpoint, where does the energy absorbed in an endothermic chemical reaction go?…

A: In an endothermic reaction energy flows from surroundings to system (chemical molecules composing…

Q: 2A + 3B → C       ΔHrxn = -125 kJ  Determine the amount of heat emitted when each of the following…

A: The enthalpy of reaction is based on the molar quantities of reactants that is given by the…

Q: .A sample of solid sodium was reacted with chlorine gas to give 4.36 g of pure NaCl.  The energy…

A: Heat of formation of a compound is the heat change when one mole of that particular compound formed…

Q: The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 25.0 mL of…

A: HBr + NaOH → NaBr + H2O    First calculate the millimoles of each reactant to find the limiting…

Q: Why is it important to give the physical states of the reactants and products when giving an…

A: Since you have posted more than one question, we are answering the first one for you. To get the…

Q: For the reaction shown, compute the theoretical yield of the product in moles for each of the…

A: The balanced chemical equation is given below.

Q: How much heat will be released (∆H) if 0.5659 mol of NH₃ are mixed with 0.20 mol of O₂ in the…

A: Given: The reaction is as follows, 4NH3(g)+O2(g) → 2N2H4(g)+2H2O(g)      ∆H° = -286 kJ/mol Moles of…

Q: When NaNO2(s) is dissolved in water the process is endothermic.  What happens to the temperature of…

A: The process of the dissolving NaNO2(s) in water is endothermic. The enthalpy change for the…

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.