1. How many significant figures do the following values have? a) 0.045 g b) 43.050 mL 2. Record the length of the lines below to the correct number of significant f a) 1 2 3 cm 1 b) cm 2 ןויוןוו 3
1. How many significant figures do the following values have? a) 0.045 g b) 43.050 mL 2. Record the length of the lines below to the correct number of significant f a) 1 2 3 cm 1 b) cm 2 ןויוןוו 3
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:**Measurement and Significant Figures: Educational Content**
**1. Counting Significant Figures**
Given values and their significant figures:
- **0.045 g**: This value has 2 significant figures (4 and 5).
- **43.050 mL**: This value has 5 significant figures (4, 3, 0, 5, and 0).
**2. Measuring Line Lengths**
Record the length of the lines below to the correct number of significant figures:
**a)**
- Diagram: A ruler is provided, marking centimeters (cm) from 1 to 3.
- Measurement: The line approximately measures 2.3 cm.
**b)**
- Diagram: Another ruler provided, marking centimeters (cm) from 1 to 3 with finer subdivisions.
- Measurement: The line approximately measures 2.35 cm.
**Explanation of Diagrams:**
- **Diagram a)** shows a ruler marked from 1 to 3 cm with major subdivisions for each whole number.
- **Diagram b)** shows a ruler marked from 1 to 3 cm with finer, smaller subdivisions for each half and tenth of a centimeter.
By reading the rulers on these diagrams, you can determine the lengths of the lines with an appropriate number of significant figures based on the precision of the measuring tool shown.
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