1. Check under systems tab if the molecular weight is checked and restart the program.
2. Touch and go but some of them really work. Under programs, click on MW. Search. If not there you can google the molar weight of your substance. Take that number and "create program" and under frequency list your desired frequency with 'M' in front of the number. Example: If the molecular weight is 99.01; List as "M99.01" and save your program. Go to the empty shell and pick Golden Ratio or Substance and then to programs then pick your program and run it.
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