That depends on a few things. First of all, the Novell Password can't be exported since it uses a one way encryption method. New passwords are entered, crypted, and the crypto-text is compared to the stored crypto-text. Universal Passwords are a newer extension of Novell passwords that use 3DES to store the hash, and is technically reversible. The key is stored on a non-exportable attribute on each server-object.
I do not believe there is a way to natively and directly sync passwords between Google Apps Directory Sync and eDirectory. However, if Apps Directory Sync can function in Batch Mode (I don't know the app, so I can't say), you might be able to make it work through cunning scripting.
There is a way to export clear-text passwords from eDirectory. You need to set your Universal Password Policy to allow Admins to "retrieve universal passwords". Once that is done, use a utility like this one:
To retrieve the clear-text passwords. With this, it may be possible to merge the output of this utility with an LDIF dump from eDir that Google Apps Directory Sync can then use for password sync.
Update: If you're lucky enough to be using Novell IDM, I believe there is a connector for that and Google Apps which will allow 'native' password sync. However, without it the above method is probably your best bet.