EBK INTRODUCTORY CHEMISTRY
EBK INTRODUCTORY CHEMISTRY
8th Edition
ISBN: 9780134553153
Author: CORWIN
Publisher: PEARSON CO
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Chapter PSS, Problem 8ST
Interpretation Introduction

Interpretation:

Whether it is better to round off after each step, or round off the final answer in the calculator display is to be stated.

Concept introduction:

The significant numbers are taken by counting the digits from left to right and starting by the first non-zero digit. The process of eliminating the non-significant digit is known as the rounding off. This rounding off follows three rules which are stated below as:

Rule 1: If the first non-significant digit is less than 5 then all the non-significant digits are dropped.

Rule 2: If the first non-significant digit is equal to or greater than 5 then last significant digit is increased by 1 and dropped all the non-significant digits.

Rule 3: In a multistep calculation the non-significant digits are taken in all the steps.

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EBK INTRODUCTORY CHEMISTRY

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