It's a plural noun, so it refers to multiple tasks that need to be done around the house or in general.
Here are some examples of how it's used:
* "Tengo que hacer los quehaceres de la casa." (I have to do the household chores.)
* "Los quehaceres diarios pueden ser abrumadores." (Daily chores can be overwhelming.)
* "Ayúdame con los quehaceres, por favor." (Help me with the chores, please.)