Subjects...

1. Avogadro’s Number » 22 kb Code:S101

Contents: Explanation of Avogadro's Number. Mole concept. Some examples about Avogadro's Number.

2. Molar Mass (Atomic Weight and Molecular Weight) » 24 kb Code:S102

Contents: Explanation of atomic mass and molecular mass. How to find molecular mass of a compound. Some examples.

3. Molar Volume » 22 kb  Code:S103

Contents: Expalanation molar volume and some examples.

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1. Simplest Chemical Calculations » 16 kb 11 questions. Code:S301

2. Empirical Formula and Molecular Formula » 16 kb 13 questions. Code:S306

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1. Element in a Compound  » 15 kb 12 questions. Code:S402

2. Finding Atomic Weight of Element in a Compound » 17 kb 21 questions. Code:S403

3. Chemical Equations » 30 kb 16 questions. Code:S404

4. Finding Empirical Formula » 16 kb 18 questions. Code:S405

5. Limiting Reagent  » 17 kb 17 questions. Code:S406

1. Conservation of Mass » 22 kb

Purpose: To recognize the law of conservation of mass and to learn the careful use of a balance in determining  the masses of reactants and products.

2. Determining Atomic Mass!!!  » 31 kb

Purpose:  From measurements of a binary compound of known composition, determine the gram atomic mass of one of the elements in the compound when the atomic mass of the other element is known.

3. Determining an Empirical Formula » 29 kb

Purpose: Using mass relationships, show that magnesium and oxygen combine in a definite whole-number ratio by mass.

4. Composition of Hydrates » 40 kb

Purpose: Determine the percentage of water, find the number of molecules of water in a hydrate.