Chemistry

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Could someone give me the steps to converting using the metric system scientific notation? For example, how would I convert 2.2 x 10^2 cm to km? Thanks ( I try Google but they only teach how to convert it when it not in scientific notations form)

  • Chemistry -

    2.2E2 cm x (1 m/100 cm) x (1 km/1000m) = 2E-3 km.

  • Chemistry -

    in 4.68 mg boron ther are how mant of the following: grams
    moles
    atoms

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