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Homework Help: How long would it take to count all the atoms in

  1. Jul 21, 2009 #1
    How long would it take to count all of the atoms in 12 grams of Carbon-12, If you could only count one atom per second?
  2. jcsd
  3. Jul 21, 2009 #2


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    Gold Member

    Hint : How many grams of carbon 12 makes one mole? How many atoms is there in a mole?
  4. Jul 21, 2009 #3
    hey, thanks a lot for your reply, yeah i know about Avagadro’s number but i am stuck on getting it into years, dividing it by how many seconds in a year?
  5. Jul 21, 2009 #4


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    Science Advisor

    It's easy to calculate the number of seconds in a year if you know the number of seconds in a minute, the number of minutes in an hour, the number of hours in a day and the number of days in a year.
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