Answered: Consider a 1.2 mol block of iron with a…

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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Question

Consider a 1.2 mol block of iron with a specific heat capacity of 0.44 J/g°C. The atomic mass of Fe is 55.85 amu.

(A) Calculate the heat absorbed in KJ if the block is heated from 18.1 °C to 31.5°C. You may assume that the heat capacity is constant over this temperature range.

(B) What is the change in entropy, ΔS, for this same process?

Please explain for part a and b...

Expert Solution

Step 1

The amount of heat required to raise the temperature of the sample is given by:

$q = m c ∆ T q i s t h e h e a t o f c o m b u s t i o n, m i s t h e m a s s, c i s t h e h e a t c a p a c i t y a n d ∆ T i s t h e d i f f e r e n c e i n t e m p e r a t u r e$