Significant figures represent the precision/certainty of a measured quantity. The greater the number of significant figures, the greater the precision/certainty of the measurement.
In this video, I am going over:
1. Rules of counting significant figures (1:14)
2. Trailing zeros
3. Exact numbers
4. Addition/Subtraction
5.Multiplication/Division
6. Rounding
Sorry for the background noise and the awkwardness. This is something I have never done before, I'm usually a shy person =) I hope this video is helpful for you guys. I am also a student, I was in your shoes when I first started taking Chemistry. I admit Chemistry ain't easy, but trust me it's not impossible. I believe that you can do it.
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Credit: Introductory Chemistry by Nivaldo J. Tro (4th Édition)
Chemistry A Molecular Approach by Nivaldo J. Tro (4th Édition)