Answer
99.987%.
Work Step by Step
From a total of 7.748mg of Hg, 7.747 were filtered.
$\frac{7.748}{7.747}$ = $\frac{100}{x}$
7.748x = 7.747 $\times$ 100
7.748x = 774.7
x = $\frac{774.7}{7.748}$
x = 99.987
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 1 - Introduction: Matter and Measurement - Additional Exercises - Page 39: 1.88c
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