Question

which of these is a common use for an erlenmeyer flask? it is used for containing gaseous reactants for a reaction. it is used for making specific (precise) measurements. it is used for containing gaseous products of a reaction. it is used for swirling the contents during a reaction to help mixing.

Explanation:

Erlenmeyer flasks have a conical shape which allows for easy swirling of contents during a reaction to promote mixing. They are not primarily used for precise measurements (volumetric flasks are better for that), nor are they specialized for containing only gaseous reactants or products.

Answer:

It is used for swirling the contents during a reaction to help mixing.