Prghlem 2: The amount of mass transported Via a pipe over a period of time can be computed as Where M = mass (mg), t1 = initial time (min), t: = the nal time (min) and C(t) = concentration (mgfms). The ow rate Q can be computed as: Q = 9 + JIM0.0m2 And the concentration was measured at different times from 0 to 15 min as in table below: Time 0 ' 1 2 5 8 11 15 (min) C(t), 7 ' 5.4 4.5 4.6 6.7 10.4 19 mam