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how the answer become 0.69kg and where the formula came from.

how the answer become 0.69kg and where the formula came from.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Hi. Can u pls explain to me how the answer become 0.69kg and where the formula came from. Im confused

Problem: How much steam at 100* is needed to just melt 5Kg of ice at - -15*C Heat loss= Heat gain Heat condense steam + Heat loss of water= Heat gain of ice + heat of melt ice. mteam LV +m steam Cwater Change in T= mice Cice Change in T+ mice 4 m steam 22.5 * 105 + m steam *4200* (100-0)=5*2300* ( 0-(-15) +5*3.34* 105 2.67 * 106 * m = 1.84*106 steam m steam =Db.69kg
Transcribed Image Text:Problem: How much steam at 100* is needed to just melt 5Kg of ice at - -15*C Heat loss= Heat gain Heat condense steam + Heat loss of water= Heat gain of ice + heat of melt ice. mteam LV +m steam Cwater Change in T= mice Cice Change in T+ mice 4 m steam 22.5 * 105 + m steam *4200* (100-0)=5*2300* ( 0-(-15) +5*3.34* 105 2.67 * 106 * m = 1.84*106 steam m steam =Db.69kg
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