Table of contents

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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

3. Chemical Reactions

Stoichiometry

General Chemistry

3. Chemical Reactions

Stoichiometry

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Multiple Choice

In order to calculate the mass of a product in a chemical reaction from the number of moles of a reactant, which of the following describes all the conversion factors needed?

Molar mass reactant, molar mass product.

Molar mass reactant, mole ratio of product to reactant from the balanced chemical equation, molar mass product.

Molar mass reactant, mole ratio of product to reactant from the balanced chemical equation.

Mole ratio of product to reactant from the balanced chemical equation.

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Verified step by step guidance

Identify the given information: the number of moles of a reactant is provided, and you need to find the mass of a product.

Understand the concept of stoichiometry: it involves using the balanced chemical equation to relate the quantities of reactants and products.

Determine the mole ratio: from the balanced chemical equation, find the mole ratio of the product to the reactant. This ratio is crucial for converting moles of reactant to moles of product.

Use the mole ratio as a conversion factor: multiply the given moles of reactant by the mole ratio to find the moles of product.

Convert moles of product to mass: use the molar mass of the product (in grams per mole) to convert the moles of product to mass by multiplying the moles of product by the molar mass.