A student completed the lab but found that the total amount of material recovered weighed more than the original sample. What is the error?

Throughout the description section elsewhere here, the interpretation as per the particular circumstance is defined.

Explanation:

Sources of error become basically factors of measurement uncertainty. If the cumulative volume of retrieved material weighed almost as much as the initial sample, and therefore procedural cause of error is still much most probable.

Lost compound will be:

=

=

Percentage of the lost compound will be:

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=

The reaction will shift to the right