Can you create a ONE LINE ACL that permits the range 10.0.0.0 - 10.192.255.255 or would you have to do it in separate statements?
no, it is not possible. If you write it down as binary :
you can reveal, that the only common part what can be masked is the first octet, that is, with one mask you can specify only the whole class A 10.0.0.0 address range.
I am not sure, but I think you have to do it with multiple statements:
10.0.0.1 255.128.0.0 (0 - 127)
10.128.0.1 255.192.0.0 (128 - 191)
10.192.0.1 255.255.255.0 (192)