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Why sometimes is it more accurate to weigh liquids than to use a graduated cylinder t

  1. Mar 25, 2005 #1
    i wanna know
    Why sometimes is it more accurate to weigh liquids than to use a graduated cylinder to measure them??
     
  2. jcsd
  3. Mar 25, 2005 #2
    It has to do with the accuracy of the balance you use........it is most likely that the balance you use is more accurate than human judgement is at eyeing an exact volume.
     
  4. Mar 26, 2005 #3
    Also, densities of liquids are calulated with much accuracy as well. So weighing a liquid increases overall accuracy......assuming your glassware is clean.
     
  5. Mar 26, 2005 #4

    chem_tr

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    Gold Member

    Yes, this is correct. If you first weigh a clean and empty glassware and zero it while it is on the balance, and then add a required amount of liquid (considering its density), you can calculate its volume. Some analytical balances can weigh accurately to 0.01 mg, and even more.
     
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