Is it possible for me to place my Mom temporarily in a facility until I return?

Depending on how long you will be gone, if you just need a time off for one day, then adult day care services might be suitable for your mom. But if you will be gone for about one week to one month then respite care will be the best option you have. As stated in infolongtermcare, respite care provides long-term care services either at home or in a facility depending on the care recipients needs and preferences.

Absolutely. Look for respite care. My mthr's memory care home offers respite care for up to a week. The people seem to adjust to vacation just fine, and are so happy to be visiting their "friends."