Calculating Empirical and Molecular Formula: What Is a Mass Spectrometer?

What's the formula for success? A unique and well-written resource from JFR Science explains empirical and molecular formulas. Young chemists learn the steps and skills required to determine the formulas from percent composition and molar mass.

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CCSS: Adaptable
Instructional Ideas

  • Cover empirical and molecular formulas together to reinforce their relationship
  • Show the class what happens inside a mass spectrometer using a short video
Classroom Considerations

  • Learners must be fluent in percent composition

  • The comparison and explanations of molecular and empirical formulas are clear and extremely helpful
  • Illustrations help show pupils how to set up the problems

  • None
Common Core