Question

what piece of equipment is used with a filter flask and a vacuum source to rapidly separate a solid precipitate from a liquid?
select one:
a crucible
a beaker
a watch glass
a büchner funnel

Explanation:

A Büchner funnel is used in filtration processes. When combined with a filter flask and a vacuum source (such as a water aspirator), it creates a vacuum - assisted filtration setup. This setup allows for the rapid separation of a solid precipitate from a liquid. A watch glass is mainly used for covering containers or evaporating small amounts of liquid. A beaker is a general - purpose container for holding, mixing, and heating liquids. A crucible is used for heating substances to high temperatures, often in a furnace.

Answer:

A Büchner funnel