I have installed the trial version of Q-Chem in my computer (Linux) with the necessary steps required. Finally a message “Q-Chem installation/update has been completed” has appeared. Below it instruction to run calculation is provided : For tcsh or csh: source /home/raj/opt/qchem/qcenv.csh For bash: . /home/raj/opt/qchem/qcenv.sh I have selected an input file from “sample” dir…