Table of contents

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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

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Multiple Choice

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

1.2

1.170

1.17

1.20

1.10

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Verified step by step guidance

Identify the smallest division on the ruler to determine the precision of the measurement. This will help in understanding how many decimal places the measurement should have.

Examine the given measurements: 1.2, 1.170, 1.17, and 1.10. Consider the number of significant figures in each measurement.

Recall that significant figures are determined by the precision of the measuring instrument. The number of significant figures includes all certain digits and the first uncertain digit.

Compare the given measurements to the correct answer, 1.20. Notice that 1.20 has three significant figures, indicating the precision of the measurement.

Determine which of the given measurements matches the correct number of significant figures (three) and reflects the precision of the ruler, which is 1.20.