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 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
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 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

2. Atoms & Elements

Mole Concept

General Chemistry

2. Atoms & Elements

Mole Concept

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Multiple Choice

How can you convert the mass of a substance to moles?

Multiply the mass of the substance in grams by its molar mass.

Multiply the molar mass of the substance by the mass of the substance in grams.

Divide the mass of the substance in grams by its molar mass.

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Verified step by step guidance

Identify the mass of the substance in grams that you want to convert to moles.

Determine the molar mass of the substance. This is the mass of one mole of the substance and is usually expressed in grams per mole (g/mol). You can find this value on the periodic table for elements or by summing the atomic masses of all atoms in a compound.

Use the formula to convert mass to moles: \( \text{moles} = \frac{\text{mass in grams}}{\text{molar mass in g/mol}} \).

Substitute the known values into the formula. Place the mass of the substance in grams in the numerator and the molar mass in the denominator.

Perform the division to calculate the number of moles of the substance.