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A student measures the mass of a book as 12,321g. What is the book's mass in kg?

  • chemistry -

    to convert to kg


  • chemistry -

    thanks, buti don't understand where to put the decimal in the answer!

  • chemistry -

    Hm..the decimal point?

    lets see...

    12,321g (1kg/1000g)= 12.321kg

  • chemistry -

    You can divide 12,321 by 1,000 on your calculator. What do you get?

    Or -- since you're dividing by 1,000 which has has 3 zeroes, move the decimal point 3 places to the left.

    Does your answer make sense? Would you expect the book to have more or less grams than kilograms?

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