Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 decade ago

What is the percent error?

What is the percent error for a mass measure-

ment of 15.2 g, given that the correct value is

21.9 g? Answer in units of %

4 Answers

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  • Emma
    Lv 4
    1 decade ago
    Best answer

    The absolute value of (Experimental - Actual) / Actual

    Then multiply by 100

    abs(15.2-21.9) = 6.7

    6.7/21.9 = .3059

    0.3059 x 100 = 30.6%

    This is a relatively high percent error, so if you are writing a report be sure to add possible sources of error (human error, etc.).

  • 1 decade ago

    The formula is percent error= measured value-accepted value / accepted value x 100.

    percent error= 15.2-21.9/21.9 x 100

    percent error=-30.5= -31%

    You can't have a negative % error, so it is 31% error.

    Source(s): 11th grade high school Chemistry student. I have a 84 and named Student of the Month.
  • 1 decade ago

    (measured - correct) /correct * 100

    Source(s): the sponge.
  • 1 decade ago

    The error is 6.7 g, so 6.7 / 21.9 = 30.6%

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