You shouldn't be doing your prelabs right before your lab, so there shouldn't be a problem
Switching yields:
Lets you go home early on wednesday to work on prelab
Makes your schedule more dense so theres no wasted time around campus
Makes you want to go to your chinese tutorial instead of just going home after class
The walk to your lab is quite a bit though, keep that in mind, because you'll have to get a snack right after chem that day, or risk starvation.
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