What could have accounted for a percent yield of
less than 100% in this lab?

Check all that apply.

-The copper chloride did not fully dissolve in water before performing the reaction.

-The mass of the copper was not measured with the same accuracy.

-Not all of the copper was collected in the
filter.

-Not enough time was allowed for all of the
aluminum to react.

-There were impurities in the aluminum.