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16 December, 17:49

The exact value for the density of aluminum is 2.699g/cm3. Working in the science lab at school, Joseph finds the density of a piece of aluminum to be 2.75 g/cm3. what is Joseph percent error? (Round to the nearest hundredths)

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  1. 16 December, 20:47
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    The formula for percent error is: (M-A) / A x 100

    M = the amount of the sample measured

    A = the exact value of the sample

    And the value of M-A is always positive

    So, 2.75-2.699 =.051g/cm3, and. 051/2.699=.01889

    .01889 x 100=1.889% or 1.9% error
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