Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 1 - Exercises - Page 39: 75


a) in 1,050,501km underline all zeroes; b) in 0.0020m cross out first 3 zeroes and underline last zero; c) in 0.000000000000002s cross out all zeroes; d) in 0.001090 cm cross out first 3 zeroes and underline last 2 zeroes

Work Step by Step

The first 3 zeroes are insignificant because they are leading zeroes (zeroes in front of (to the left of) a non-zero number that serve as a place holder). The last zero is significant because it is a trailing zero (to the right of a non-zero number after a decimal point).
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.