Mother in hospice out of state and landlord wants her belongings gone by end of month. I don’t have the resources to do so...now what?

Such challenges! Sorry that you are having to tackle this.
I work for a senior move management company in NC. There are senior move managers throughout the country. They will clean out the apartment; pack what is being saved and take care of getting rid of items that need to be either trashed or donated. They can coordinate moving items with moving companies. In some states, senior move managers are considered an ‘essential business’. Go to nasmm.org to learn more. A senior move manager also knows other agencies to assist seniors with this situation.
Notary: hospital’s have them on staff, so ask the nursing facility. Hospitals also have the documents for POA and living wills. Using technology, the facility should be able to assist. They are under a lot of stress right now so it’s going to take a lot of patience and kindness on your part; stay strong🙏

Was your mom behind in the rent before COVID? If not, I don't think the landlord can evict her. L.A. has landlords hog-tied right now because they've put a moratorium on evictions until the end of the year, I believe.

However, I think the one out a landlord has is if the rent was in arrears before the pandemic.

Contact the housing authority in L.A. and get the specifics on the rules right now. It might buy you time, but on the other hand, does she have anything worth keeping?

Is there anyone you know or knows your mother that can assist with collection of any notices of eviction placed on the property. In CA, eviction is not as easy as most states. In fact it is very difficult. It usually takes months, so I am not even sure if being out by the end of the month is legal unless the landlord has already gone through months of the eviction process. The state I live in has a stay on all evictions due to Covid. I think these might be threats just because he wants the apartment empty. Also, you can protest an eviction through the courts. Most cases are allowing online submission of documents currently, so you do not even need to be there.
There could be an elder care non profit that could help out. From my understanding they cannot simply dispose of the property either. I suggest you read up on CA eviction laws. I think they are very liberally in the tenants favor.