A battery harnesses a chemical reaction to extract energy in the form of useful electrical work. (a) A certain battery runs a toy truck and becomes par- tially discharged. In the process, it performs a total of 117.0 J of work on its immediate surroundings. It also gives off 3.0 J of heat, which the surroundings absorb. No other work or heat is exchanged with the sur- roundings. Compute q, w, and AU of the battery, making sure each quantity has the proper sign. (b) The same battery is now recharged exactly to its origi- nal condition. This requires 210.0 J of electrical work from an outside generator. Determine q for the battery in this process. Explain why q has the sign that it does.

A battery harnesses a chemical reaction to extract energy in the form of useful electrical work. (a) A certain battery runs a toy truck and becomes par- tially discharged. In the process, it performs a total of 117.0 J of work on its immediate surroundings. It also gives off 3.0 J of heat, which the surroundings absorb. No other work or heat is exchanged with the sur- roundings. Compute q, w, and AU of the battery, making sure each quantity has the proper sign. (b) The same battery is now recharged exactly to its origi- nal condition. This requires 210.0 J of electrical work from an outside generator. Determine q for the battery in this process. Explain why q has the sign that it does.

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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