Mom is dying. Husband is being an ***. What do I do?

My mom is in hospice care and I am her caregiver. We only have a few weeks left with her so I am spending as much time with her as possible while balancing my time with my husband and children.. My husband is being an absolute ***. He has been in a horrible mood for days, yelling at the kids for little things and when I ask him to lighten up on them, he turns it on me. I try and talk to him about what I am feeling about my mom dying and he won't even turn off the tv to listen. All he seems concerned about is "what we will get" when she dies. She tried to give us her house and when I told him that would not be happening, he got really upset. I just don't have the energy to deal with his crap right now, what do I do?