How many syllables does the word aequeosalinocalinceraceoaluminosocupr...?
I think you mean: aequeosalinocalcalinoceraceoaluminosocup.
The word: "aequeosalinocalcalinoceraceoaluminosocup" has 17 syllables.
How many syllables are in the word maenwhile?
There are two syllables in the word: "maenwhile".
However I'm sure you mean: meanwhile which also has two syllables.
How many syllables are there in the word loudspeaker?
There are two syllables in the word "loudspeaker": loud-speak-er.