If a measured quantity is written correctly, which digits are certain? Which are uncertain?
Step 1 of 3
A measured quantity is called significant figures (correct) when it consists of certain and uncertain digits.
Rules for significant figures: A significant figures = certain digit + first uncertain digit
Therefore, the last digit of significant figures are always uncertain.
Let us consider a measured quantity 30.28
Here, (3), (0) and (2) are certain digit and (8) is uncertain digit.
Textbook: Introductory Chemistry
Author: Nivaldo J Tro
This full solution covers the following key subjects: correctly, digits, measured, quantity, uncertain. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. The answer to “If a measured quantity is written correctly, which digits are certain? Which are uncertain?” is broken down into a number of easy to follow steps, and 14 words. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. The full step-by-step solution to problem: 4Q from chapter: 2 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. Since the solution to 4Q from 2 chapter was answered, more than 443 students have viewed the full step-by-step answer. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295.