Answered: One of the lecture demonstrations…

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

Q/ One of the lecture demonstrations showed 8 ice cubes
melting on an aluminum block in the same time needed
to melt one cube on a Styrofoam block. If an ice cube
has an average mass of 30.6 grams, and each starts at
–10.0 °C, how much heat (in kJ) transferred through the
aluminum block to melt all 8 cubes to H2O(l) at 0.0 °C?
Show all work.

thermodynamic data for H,O
334 J/g
AH fusion
AH vap.
2257 J/g
c, of H,O(s)
c, of H,O(1)
2.06 J/(g•°C)
4.184 J/(g °C)

Expert Solution

Step 1

$\begin{array}{rcl} G i v e n d a t a, \\ M a s s o f o n e i c e c u b e & = & 30.6 g \\ ∆ H_{f u s} & = & 334 J / g \\ C_{H_{2} O (s)} & = & 2.06 J / g^{o} C \\ C_{H_{2} O (l)} & = & 4.184 J / g^{o} C \\ I n i t i a l t e m p e r a t u r e & = & - 10 . 0^{o} C \\ F i n a l t e m p e r a t u r e & = & 0^{o} C \end{array}$

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