Question

why would you need to purge a cylinder? select all that apply. the cylinder was not purged by the manufacturer. the cylinder was opened to the atmosphere. the cylinder still has some propane in it.

Explanation:

Purging a cylinder is done to remove contaminants or unwanted gases. If the cylinder was not purged by the manufacturer, it may contain impurities. When a cylinder is opened to the atmosphere, air and other contaminants can enter, necessitating purging. The presence of some remaining propane is not a reason for purging; rather, it's about removing non - desired substances.

Answer:

The cylinder was not purged by the manufacturer., The cylinder was opened to the atmosphere.