Is Mindfulness the Opposite of Multitasking?

I realized that my use of social media always involves doing something else, and if I am on the internet I might also be on social media. Thus, I am always multitasking seemingly. **How does the mind process multitasking? Is it possible to be mindful of each task (e.g. *social media* and *writing a text*) one after the other, or is such a thing impossible?** EDIT: By one after the other I mean for a short amount of time, going back and forth between the tasks.