A banana (mass 120g, volume 180mL) is placed into a 1L container and CO2 accumulation in the container is measured after 20 min. The ambient CO2 is 390ppm, and the amount of CO2 measured in the container after 15 min incubation is 1000ppm. How much CO2 (µL) does the fruit produce hourly per gram? (Show calculations.)​