you can tell if a clip is a stero pair by looking in the "Audio" column.
or, after you've cut it into the timeline, you can tell a stereo clip by the little green double triangles on the audio.
if it doesnt have those, then it's dual mono, and most likely both tracks wil play out the center.
you could open them and pan them, but a quicker way is just to make them stereo.
select, and OPTION L to Stereo-Link.
sometimes this will work in a batch, meaning you can select a whole timeline and Option L, but that;s mainly if you;ve captured the cl;ips as Ch1+Ch2
if they;re single track files, with a seperate file for left and right (like files used in ProTools) then they may NOT batch, and you have to do each one. :-(
nick