if the f/m of a 0.4380 m3/s activated sludge plant is 0.200 mg/mg ? d, the influent bod5 after primary settling is 150 mg/l and the mlvss is 2,200 mg/l, what is the volume of the aeration tank?

Explain what happens at the saturation point when adding salt to water at room temperature.

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.