Chemistry: Molecular Approach (4th Edition)

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

Chapter 1 - Exercises: 75

Answer

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).
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