O:- A piece of gold (c=0-1a9 J/g) c^s heated to Lo0'c and placed into 6omL water at 20.5%. phe final temp. of the Systero

Q: T3097.00°C = AHvap (3097.00° C) = 6603 J/g Tm 1495.00°C fus AH (1495.00°C) 262.7 J/g = J Specific…

A: The mass of the solid cobalt sample = The initial temperature of solid cobalt = The final…

Q: 2 a and b

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: Kmax = (6.63x1034 J.s) (7.09x10¹4 s¹)-(2.17x10 J) h. y = 2.25×108 m/s 3.00×108 m/s 1.

A:

Q: Help fill in the Blanks on the table, show sample calculations for each MP(°C) MW(g/mol) Amount Used…

A: Note: Since you have posted a question with multiple sub parts, we will provide the solution only to…

Q: What is the heat change in kj associated with 33.38 g of liquid water at 5.00 ° C changing to solid…

A:

Q: What is the enthalpy change for the following reaction?

A: According to Hess’s Law “total enthalpy change of a reaction is the sum of enthalpy change of…

Q: hp of methanol and 1-propanol are 1.331 and 1.387 respectively. Calculate the mole percentage of…

A: The mole percentage of a compound can be determined by the following relationship between refractive…

Q: A specific brand of hand sanitizer contains 72% ethanol (ethyl alcohol) by volume. If each bottle…

A: Given:   Volume of ethanol=5.5 gal.    1 bottle  contain=236 mL  sanitizer     No.  of bottles=?

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A: Initial temperature of boiling water = 100˚C Calculation of heat lost by hot water: Q=mc∆T=1 kg×1…

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Q: Estimate the thermal properties of a food with the following composition: carbohydrate 0.3%, protein…

A: Note: Since we are entitled to answer only three sub-parts, we’ll answer the first three as no…

Q: Given the data: Volume of 1.00M HCI (mL) 45.0 Volume of 1.00 M NAOH (mL) 50.0 Initial Temperature…

A: Write the expression for amount of heat needed. q=m.c.∆T where m is the mass, c is the specific heat…

Q: Which

A: Endothermic reaction in which heat is given

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A: Given:Part B:Part C:Calculate .The change in enthalpy that occurs when one mole of acid and one one…

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A:

Q: A student wants to know the number of food Calories in their favorite snack. They burn their snack…

A: Given, Mass of water = 200g Water temperature before burning= initial temperature= (Ti)=  25oC.…

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Q: 1.77 An Olympic-size pool is 50.0 m long and 25.0 m wide. (a) How many gallons of water (d = 1.0…

A: Q.(77) Answer: 1 gallon = 3.785 litre 1 ft = 30.48 cm Given, length of the pull = 50 m = 50 x 100 cm…

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Q: Use data from CRC Std Thermodyn Substances and thermo data jons to calculate A and AS for vaporizing…

A: The chemical reaction reaction which represents the vaporization of ethanol (C2H5OH) is given by…

Q: High-purity benzoic acid (CH;COOH; AHxn for combustion =-3227 kJ/mol) is used as a standard for…

A: The heat of combustion of benzoic acid is = -3227 kJ/mol The mass of benzoic acid is = 1.221 g The…

Q: Methanol is known to be the simplest alcohol, and is used as an antifreeze agent, a solvent, a fuel…

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Q: If 50.5 g of KBr are dissolved in 400.0 g of water at 25.0 °C in an insulated container, a…

A: The Mass of KBr is = 50.5 g The molar mass of KBr is = 119.002 g/mol The mass of the solvent is =…

Q: The following information is given for silver at 1 atm: Th=2212.00˚C Tm=961.00°C Specific heat solid…

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Q: What is the OT av U for a gas obeying P = nRT V -a (2) 2

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Q: 6. How many calories of heat are needed to change 55.00g of nickel at 1250.0°C to 1750.0°C? (C…

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Q: Eto O OEt 1. NaOCH3 2. H*, H₂O, heat 22 M

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Q: for a experiment how would you calculate the mmol & Equivalents with    MW= 106.42g/mol Amount…

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Q: ) If pKw = 6.92 then

A: The ionic product of water (Kw ) is  defined as  Kw = [H3O+][OH-] Then, pKw = -log Kw

Q: ADVANCED STUDY ASSIGNMENT 1. 0.500 g of Ca is added to 50.0 mL of 1.0 M HCI. Once reaction is…

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

Q: Complete the cooling curve in the figure below and indicate on your drawing (1) the point on the…

A: Given phase diagram:

Q: Help fill in the Blanks on the table, show sample calculations for each MP(°C) MW(g/mol) Amount Used…

A: Note: Since you have posted a question with multiple sub parts, we will provide the solution only to…

Q: How much heat is evolved when 4.03 g of wateris producedwith excess oxygen?(6pts)H2(g)+ O2(g)→H2O(l)…

A: Answer:- This question is answered by using the simple concept of calculation of heat evolved using…

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.