The temperature of a sample of copper increased by 24.7 °C when 275 J of heat was applied. Substance Specific heat J/(g • °C) lead 0.128 What is the mass of the sample? silver 0.235 сорper 0.385 iron 0.449 aluminum 0.903 m =

The temperature of a sample of copper increased by 24.7 °C when 275 J of heat was applied. Substance Specific heat J/(g • °C) lead 0.128 What is the mass of the sample? silver 0.235 сорper 0.385 iron 0.449 aluminum 0.903 m =

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter8: Thermochemistry

Section: Chapter Questions

Problem 72QAP: On complete combustion at constant pressure, a 1.00-L sample of a gaseous mixture at 0C and 1.00 atm...

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Concept explainers

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.

Question

The temperature of a sample of copper increased by 24.7 °C
when 275 J of heat was applied.
Substance
Specific heat J/(g• °C)
lead
0.128
What is the mass of the sample?
silver
0.235
0.385
Jəddoɔ
iron
0.449
aluminum
0.903
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