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why did we use 298 k here i do not understand

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 73E: Calculate G forH2O(g)+12O2(g)H2O2(g) at 600. K, using the following data:...

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why did we use 298 k here i do not understand

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