CHM 2045L - General Chemistry I Lab CHM 2045L - General Chemistry I Lab 1 cr. hr. This lab applies the principles of chemistry, atomic and molecular structure, the periodic system, stoichiometry, thermochemistry, gas laws, solutions, formulas, and equations. Lab Fee: Yes Course Designations: (GE) (TR) Prerequisite/Corequisite(s): CHM 2045