Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 51m
7. Gases3h 52m
8. Thermochemistry2h 38m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 10m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 34m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

1. Intro to General Chemistry

Significant Figures

General Chemistry

1. Intro to General Chemistry

Significant Figures

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Multiple Choice

How many significant figures should be reported for the following calculation:
5.2110 × 12.20 ÷ (11.44 − 2.113)

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Verified step by step guidance

Identify the number of significant figures in each of the numbers involved in the calculation: 5.2110 has 5 significant figures, 12.20 has 4 significant figures, and 11.44 and 2.113 have 4 and 4 significant figures respectively.

Perform the subtraction in the denominator: (11.44 - 2.113). The result of a subtraction should have the same number of decimal places as the number with the fewest decimal places in the operation.

Determine the number of decimal places in the subtraction result: Since 11.44 has 2 decimal places and 2.113 has 3 decimal places, the result should be rounded to 2 decimal places.

Perform the multiplication and division: 5.2110 × 12.20 ÷ (result from subtraction). The result of a multiplication or division should have the same number of significant figures as the number with the fewest significant figures in the operation.

Determine the number of significant figures in the final result: The number with the fewest significant figures in the multiplication and division is 12.20, which has 4 significant figures. Therefore, the final result should be reported with 4 significant figures.