Answer
Please see the work below.
Work Step by Step
We can find the number of seconds in $2h$ as follows
$2h\times 60\frac{min}{h}\times 60\frac{s}{min}\times 10^{12}\frac{ps}{s}=7.2\times 10^{15}ps$
Chemistry: Molecular Approach (4th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
0134112830
ISBN 13:
978-0-13411-283-1
Chapter 1 - Exercises - Page 40: 106
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