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Chemistry(Mastering Chemistry HELP )

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Convert 2.868*10^10g to kg, Mg, and mg
For kg, I put .002868 and 2.868*10^-3 but the computer said neither are correct. HELP PLEASE! (:

  • Chemistry(Mastering Chemistry HELP ) - ,

    The basic table is
    kg 1000
    hg 100
    dkg 10
    g 1
    dg 0.1
    cg 0.01
    mg 0.001
    So you can see there are 1000 g in 1 kg; therefore,
    2.868 x 10^10 g x (1 kg/1000g) = ?
    2.868 x 10^10 g x (1000mg/g) = ?

  • Chemistry(Mastering Chemistry HELP ) - ,

    Okay so would it be .002868? You would divide 2.868 by 1000 right? (for kg) or would it be 2.868*10^-3?

  • Chemistry(Mastering Chemistry HELP ) - ,

    No and no. You're ignoring the 10^10
    2.868 x 10^10/1000 = 2.868 x 10^7

    2.868 x 10^10 x 1000 = 2.868 x 10^13

  • Chemistry(Mastering Chemistry HELP ) - ,

    Ooohhhh that makes so much sense! Awesome. Thanks so much!

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