Fill in either the “ppm” value (X) or the “mg/m3” value (Y) AND the molecular weight of the compound. Then press the “Calculate” button.
ppm: mg/m3: molecular weight:
Based on the Molecular Weight of:
Remember to consider significant digits in your use of the answer.
To determine molecular weight, add the atomic weights of all atoms present in the chemical formula for a particular substance. Periodic Table (courtesy of Los Alamos National Laboratory).