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# Analytical Chemistry

Learn the toughest concepts covered in your Analytical Chemistry class with step-by-step video tutorials and practice problems.

Experimental Error

# Uncertainty

Uncertainty can be thought of as the range (+/-) that is associated with any given value.

## Types of Uncertainty

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Types of Uncertainty 1m
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Types of Uncertainty 2m
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Problem

Calculate the absolute uncertainty from the given problem.

6.77 (± 5.6%)

## Propagation of Uncertainty from Random Error

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Propagation of Uncertainty 2m
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Propagation of Uncertainty 3m
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Propagation of Uncertainty 4m
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Propagation of Uncertainty Calculations 3m
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Problem

Determine the absolute and relative uncertainty to the following addition and subtraction problem.

8.88 (± 0.03) - 3.29 (± 0.10) + 6.43 (± 0.001)

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Propagation of Uncertainty Calculations 5m
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Determine the absolute and relative uncertainty to the following multiplication and division problem.

1.12(±0.01) x 0.546 (±0.01) / 3.12(±0.02) x 1.12 (0.03) 11

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Propagation of Uncertainty Calculations 6m
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Problem

Based on the previous example calculate the molarity value for each student if they dissolve 0.300 (± 0.03) moles of analyte.

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Propagation of Uncertainty Calculations 4 3m
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Propagation of Uncertainty Calculations 4 3m
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