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# what is a good percent error in chemistry, and why?

why is a percent error or 43.5 bad, and 4.05 good? Thanks to anyone who can help!

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- Anonymous1 decade agoFavorite Answer
the best %percent error should be zero, which means u did the correct process exactly, but this is impossible to attained

ideal percent error must be near to zero

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- MicheleLv 44 years ago
% error = (estimate - actual) / actual * 100, in absolute value. Well, first you would subtract 7.9 from 7.86 which would be -.04. Then you would divide that with 7.86 expected result which would be -.005, then multiply by 100, which equals -.5, so the absolute value is -.5, percent error is .5%

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- 5 years ago
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what is a good percent error in chemistry, and why?

why is a percent error or 43.5 bad, and 4.05 good? Thanks to anyone who can help!

Source(s): good percent error chemistry why: https://shortly.im/IEDTI- Login to reply the answers

- 1 decade ago
think about it...its how much u were off the theoritcal values....in chem its okay to e ven exceed 200% of experimental error as long as u have enough data to support ur results

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