객관식
How many significant figures does the number 0.054901 have?
142
views
1. Intro to General Chemistry
Significant Figures
Multiple Choice
Using the rules for significant figures, how many significant figures are in the measurement 0.00450?
A
4
B
3
C
2
D
5
검증된 단계별 안내1
Identify all the digits in the measurement 0.00450 and determine which are significant based on the rules for significant figures.
Recall that leading zeros (zeros before the first nonzero digit) are not significant; they only serve as placeholders.
Count all nonzero digits and any zeros that come after a nonzero digit in the number as significant.
In 0.00450, the digits '4' and '5' are nonzero and significant, and the trailing zero after '5' is also significant because it indicates precision.
Sum the significant digits: the two nonzero digits plus the trailing zero, resulting in a total of 3 significant figures.
Related Videos
Related Practice
