Answer
0.0543Ci.
Work Step by Step
The activity rate decreases exponentially. 2.00 hours is 120 minutes.
$$(0.376Ci)2^{-120m/43.0m}=0.0543Ci$$
University Physics with Modern Physics (14th Edition)
by Young, Hugh D.; Freedman, Roger A.
Published by
Pearson
ISBN 10:
0321973615
ISBN 13:
978-0-32197-361-0
Chapter 43 - Nuclear Physics - Problems - Exercises - Page 1476: 43.28
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