1. An ice cube of mass 65 g is taken from a freezer at -15°C and dropped into 125 cm ofwater at 85°C. What will be the final temperature of the mixture? The specific heat of iceis 0.5 cal/g.°C and latent heat of fusion of ice is 80 cal/g. (-2. A 58-g copper calorimeter (sp. ht. 0.093 cal /g.°C) contains 260 g of water at 20°C. When78 g of an alloy at 95°C is dropped into the calorimeter, the resulting temperature is 28°C.What is the specific heat of the alloy?.

Since you have posted multiple questions, we are entitled to answer the first only. 1) Given: Mass…

An ice cube of mass 65 g is taken from a freezer at -15°C and dropped into 125 cm of water at 85°C. What will be the final temperature of the mixture? The specific heat of ice is 0.5 cal/g.°C and latent heat of fusion of ice is 80 cal/g. (

An ice cube of mass 65 g is taken from a freezer at -15°C and dropped into 125 cm of water at 85°C. What will be the final temperature of the mixture? The specific heat of ice is 0.5 cal/g.°C and latent heat of fusion of ice is 80 cal/g. (

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter12: Thermodynamic Processes And Thermochemistry

Section: Chapter Questions

Problem 14P

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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

100%

1. An ice cube of mass 65 g is taken from a freezer at -15°C and dropped into 125 cm of
water at 85°C. What will be the final temperature of the mixture? The specific heat of ice
is 0.5 cal/g.°C and latent heat of fusion of ice is 80 cal/g. (-
2. A 58-g copper calorimeter (sp. ht. 0.093 cal /g.°C) contains 260 g of water at 20°C. When
78 g of an alloy at 95°C is dropped into the calorimeter, the resulting temperature is 28°C.
What is the specific heat of the alloy?.

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