BRAINCAKEAdding Percentage Uncertainties
A final result is usually calculated by multiplying or dividing several measurements, for example concentration = moles ÷ volume. Each measurement brings its own uncertainty into the answer. The rule is simple:
when measurements are multiplied or divided, add their percentage uncertainties
The total percentage uncertainty can then be turned back into an absolute uncertainty in the answer.
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All 14 lessons in Errors and Uncertainties · All Edexcel AS-level Chemistry topics