Answer
$665\,g$
Work Step by Step
Volume= (12.78 cm$\times$1.35 cm$\times$2.75 cm)+(10.26 cm$\times$1.35 cm$\times$2.75 cm)= $85.536\,cm^{3}$
Mass= Density$\times$Volume=$7.78\,g/cm^{3}\times85.536\,cm^{3}$
$=665\,g$
General Chemistry: Principles and Modern Applications (10th Edition)
by Petrucci, Ralph H.; Herring, F. Geoffrey; Madura, Jeffry D.; Bissonnette, Carey
Published by
Pearson Prentice Hal
ISBN 10:
0132064529
ISBN 13:
978-0-13206-452-1
Chapter 1 - Matter: Its Properties and Measurement - Exercises - Density - Page 29: 60
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