1.Water leaves a reservoir at 0.05 m^3/s through a 200-mm riveted steel pipeline that protrudes into the reservoir and then immediately turns a 90º bend with a local (minor) loss coefficient equal to 0.3. Estimate the length of pipeline required for the friction losses to account for 90% of the total losses, which includes both friction losses and minor losses.
2.A stream with a flow of 22 mgd contains 180 mg/L of sodium cyanide in the form of NaCN. Chlorine can be added to destroy the NaCN waste according to the reaction shown below. Find the theoretical minimum amount of chlorine required (in lb/day). How would your answer be different if the source of chlorine was only 85% pure (provide a quantitative response)? 2 NaCN + 5 Cl2 + 12 NaOH ? N2 + Na2CO3 +10 NaCl + 6 H2O