Answer
$0.247\,d^{-1}$
Work Step by Step
Decay constant $k=\frac{0.693}{t_{1/2}}=\frac{0.693}{2.805\,d}$
$=0.247\,d^{-1}$
Chemistry (7th Edition)
by McMurry, John E.; Fay, Robert C.; Robinson, Jill Kirsten
Published by
Pearson
ISBN 10:
0321943171
ISBN 13:
978-0-32194-317-0
Chapter 19 - Nuclear Chemistry - Section Problems - Page 836: 50
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