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Learning Intentions

  • You can calculate empirical and molecular formulas.

  • You can solve practice problems that involve determining empirical and molecular formulas.

    • Content Standards being covered:

    132. The percent composition of any element in a compound can be determined by dividing the mass of the element by the mass of the whole compound multiplied by 100
    133. The empirical formula of a compound is the smallest discrete ratio of the elements in the compound
    134. The molecular formula is the actual molecular structure of the compound and is a multiple of the empirical formula

    Habits of Mind/Life skills being covered:

    Thinking and Communicating with Clarity

    Making Connections with Past Knowledge

     

    Journal Entry:

    What is the percent composition of the following substances?

    KNO3            H2SO4        C2H5OH        C6H5NH2