@AmairaniDiaz ...
Unfortunately, the short answer is no, we cannot give you the access you need to your chemistry course. You've posted your question here in the global Canvas Community website. We only have access to our own school/college/university Canvas environment(s). We do not have access to your school's Canvas environment or any of your school's Student Information Systems (SIS). I highly recommend that you connect with your school's Registration department or their Online Learning / eLearning / Distance Education department so that you can get this issue resolved a.s.a.p.
Good luck to you!