Hi-vol is a pollution control device that cleans the air by collecting particles. after 24 hours of workin, the filter mass increased from 8g to 8.3g. the air flows at the start and end of the day respectively 80 and 40 cubic feet per minute. What is the particulate concentration? Select one: a. 122.7g/m3 b. 122.7g/m3 c. 200g/m3 d. 200g/m3 Hi-vol is a pollution control device that cleans the air by collecting particles. after 24 hours of workin, the filter mass increased from 8g to 8.3g. the air flows at the start and end of the day respectively 80 and 40 cubic feet per minute. What is the particulate concentration? Select one: a. 122.7g/m3 b. 122.7g/m3 c. 200g/m3 d. 200g/m3