Thank you! I will upvote. We are given the answer key but I do not know what I am doing wrong because my answer does not match. Please show your work so I can fix my mistakes :)

1. The minimum Runway Visual Range for Category I flight take-off and landing at Orlando International Airport is 1000 m. What is the corresponding aerosol mass concentration (in mg/m3)? Assume the particle size is 0.4 um, the extinction efficiency Qe is 1, and pp is unit density. (20 points)