<p>I'm entering Duke this fall and I'm kind of confused. I'm going in undecided between comp sci, engineering, and bio/pre-med. A chem class is required for most of them, but I don't know which one to take. Chem 101L9 or 101DL. What's the difference?</p>
<p>One of them is probably the chem lab. The other is probably discussion+lecture section. You’d need to register for both to receive full credit I think.</p>
<p>101L9 is the lab section for 101DL. you have to take both.</p>