Table of contents

1. Chemical Measurements1h 50m
2. Tools of the Trade1h 17m
3. Experimental Error1h 52m
4 & 5. Statistics, Quality Assurance and Calibration Methods1h 57m
6. Chemical Equilibrium3h 41m
7. Activity and the Systematic Treatment of Equilibrium1h 0m
8. Monoprotic Acid-Base Equilibria1h 53m
9. Polyprotic Acid-Base Equilibria2h 17m
10. Acid-Base Titrations2h 37m
11. EDTA Titrations1h 34m
12. Advanced Topics in Equilibrium1h 16m
13. Fundamentals of Electrochemistry2h 19m
14. Electrodes and Potentiometry41m
15. Redox Titrations1h 14m
16. Electroanalytical Techniques57m
17. Fundamentals of Spectrophotometry50m

3. Experimental Error

Significant Figures

Analytical Chemistry

3. Experimental Error

Significant Figures

Previous problem

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Multiple Choice

Read the ruler measurement to the correct number of significant figures.

0.7

0.6

0.70

0.68

0.60

Previous problem

Verified step by step guidance

Understand the concept of significant figures: Significant figures are the digits in a measurement that contribute to its precision. This includes all certain digits and the first uncertain digit.

Examine the ruler measurement options provided: 0.7, 0.6, 0.70, 0.68, and 0.60.

Identify the number of significant figures in each option: 0.7 has 1 significant figure, 0.6 has 1 significant figure, 0.70 has 2 significant figures, 0.68 has 2 significant figures, and 0.60 has 2 significant figures.

Determine the most precise measurement: The measurement with the most significant figures is considered the most precise. In this case, 0.68 has 2 significant figures, which matches the precision of the correct answer.

Conclude that the correct measurement with the appropriate number of significant figures is 0.68, as it provides the highest precision among the options given.