can anyone show the answer step by step?

The 1 he concentration of PM2.5 from an emission source predicted from the dispersion model was 85/H2/m3. This 1 hi concentration can be aperoximately converted to the 24.hr average concentration of Meim 3 in order to compare the 24 hr federal air quality standard (NAMQy) for PM2.5. QUESTION 20 The the concentration of SO2 from an omission scurce prodicted from the dispersion model was 65g/m3. This 1 hr concentration can be approximately canverted to the 3-hr concentration of um3 in erder to compare the 3 hr federal air quality standard (NA4C) for SO2 : The thi concintration of SO2 from an emission source predicted from the dispersion model was 65/m3. This 1 -hr concentration can be approximately converted to the QUESTION 20 3-hr concentration of - H3/m3 in order to compare the 3ht federal air quality standard (NAAOs) for SO2