Quantitative Chemical Analysis 7e

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Random error
Systematic error
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(No Transcript)
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58.3
0.234
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58.3
0.234
In experimental data, the first uncertain figure
is the last significant figure.
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significant figure The number of significant
digits in a quantity is the minimum number of
digits needed to express the quantity in
scientific notation..
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Adding and subtracting with sig figs Keep least
sig figs beyond the decimal point
121.795
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Adding and subtracting with sig figs Keep least
sig figs beyond the decimal point
WATCH OUT SAME POWERS OF 10!
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Multiplying and dividing with sig figs Keep
least sig figs.