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ZingPath: The Mole

Finding Molecular Formula by Using Mole and Molecular Weight

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Finding Molecular Formula by Using Mole and Molecular Weight

Chemistry

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You will observe relationship between molecular weight, the mole and molecular formula.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • To identify the molecular formulas of various chemical compounds using molecular weight.
  • To identify the molecular formulas of various chemical compounds using gas spectroscopy.
  • To indentify compounds by use of their molecular formulas.
  • Differentiate among various substances by using molecular weight.
  • Indentify various types of toxic gases through the process of finding their molecular weights.

Everything You'll Have Covered

Molecular mass is the sum of all the atomic masses in a molecule. It can be used to identify a substance because it is unique to the specific molecule. The molecular mass is a direct result of the atoms that make the substance. This mass is also equal to 6.02◊10^23 molecules of the substance. Because of this the molecular mass can be used to calculate the number of molecules that are present in a specific sample of a substance. With this information the identification of a substance becomes easier because each molecular mass is unique.

Tutorial Details

Approximate Time 20 Minutes
Pre-requisite Concepts Learners should be familiar with molecular formulas, molecular weight, mole, and SI Units of Measurement.
Course Chemistry
Type of Tutorial Concept Development
Key Vocabulary gases, mass, molecular weight