A student obtained a clean flask. She weighed the flask and stopper on an analytical balance and found the total mass to be 22.534 g. She then filled the flask with water and found the new mass to be 49.379 g. The temperature of the water was measured to be 21°C. Use this data to find the internal volume of the stoppered flask. The density of water at various temperatures is given in Appendix H. Show all calculations necessary to answer the following questions. First calculate the mass of the water in the flask: Mass of water = mass of filled flask - mass of empty flask 1. Mass of water = g - g

Q: Aluminum metal reacts with hydrochloric acid to give aluminum chloride and hydrogen gas:…

A: Given data,Mass of Al=50gTemperature=20°C=273+20=293KMolar mass of Al=26.98154g/mol

Q: temperature of carbon dioxide is raised from room temperature to 100 °C. The heat capacity of carbon…

A:

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 181. kJ during a…

A: Enthalpy of a mixture of gaseous reactant is increased by ΔH = 181.0 kJ At a constant pressure. Work…

Q: An automobile engine provides 612 Joules of work to push the pistons and generates 2336 Joules of…

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Q: (100g)(4.184J/g K)(t-22)=(275g)(0.444J/g K)(t-100) What is the step by step solution to this…

A: The given equation is

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A:

Q: An insulated container is used to hold 43.9  g of water at 37.8 °C. A sample of copper weighing 15.7…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

Q: When salicylic acid, C,H,03, is burned in a bomb calorimeter with a heat capacity of 2.046 x 104…

A: Please find your solution below :

Q: An automobile engine generates 2344 Joules of heat that must be carried away by the cooling system.…

A: To calculate w for the engine:

Q: The amount of work to compress a gas is 80J, 30 J of heat is given off to the surroundings.…

A: Given,Work to compress a gas = 80 JHeat given off by the system = 30 JRequired,…

Q: a) Methane gas allowed to expand from a volume of 3.2 L to a volume of 8.5 L. During the course of…

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Q: If 240 kJ of heat is required at constant pressure to decompose 2.0 mol of a substances to form its…

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A: Work = power x time  = (1.7 x 103 W) x (24 hour) =(1.7 x 103 W) x (24x60x60 seconds) = 1.47 x 108 J…

Q: The complete combustion of one mole of octane releases 5074.1 kJ of heat. The products are carbon…

A:

Q: Choose all of the processes from below which describe changes which are independent of the path by…

A: The processes which depend upon the path followed are path-dependent. For example, work, heat The…

Q: Joules can be converted into units of energy known as calories: 1 Joule = .24 Calories To convert…

A: Given: Total work = 1299 J

Q: A piece of metal weighing 71.35 g was heated to 96.6oC and then put into 42.95 g of water (initially…

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Q: A chemical system in which both energy and matter can flow into or out of a system is described as:…

A: Since you have asked questions with multiple subparts, we will answer only first 3 subparts for you.…

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A: Concept - There are two types of functions - 1. Path functions, these are the properties or…

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A:

Q: A strip of magnesium metal of mass 12.5 g is dropped into a beaker of dilute hydrochloric acid .…

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A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

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A: The answers are given below

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A:

Q: chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A:

Q: Write thermochemical equations for the decomposition of one mole of the following compounds into the…

A: (a)

Q: An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given…

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A:

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A:

Q: Phosgene, COCl2, was used as a war gas during World War I. It reacts with the moisture in the lungs…

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Q: What mass of silver is required to raise the temperature of silver from 156.0ºC  to 623ºC if 5012 J…

A: Formula used  Q = mCdT where Q = heat  m = mass , C = heat capacity dT = change in temperature

Q: If 25.7 grams of 86 oC water is added to 38.7 grams of 22 oC water, the resulting water has a…

A:

Q: In the design of an experiment to the measure the heat change of a chemical reaction in an aqueous…

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Q: An insulated container is used to hold 48.0  g of water at 26.2 °C. A sample of copper weighing 17.5…

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A: Given data :

Q: One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is…

A: T = 78°CP1 = 5.20 atmP2 = 2.53 atmP3 = 1.00 atmWhat is the total work (in joules) in going to the…

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A:

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Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

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Q: Phosgene, COCl2, was used as a war gas during World War I. It reacts with the moisture in the lungs…

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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.