1.A water sample has bucarbonate concentration of 220 mg/l ( HCO3- )and the PH of the water is 7.9 > Express the approximate alkalinityof this water as mg/l of CaCO3
2.What is the flow rate for a 12-inch diameter pipe with f = 0.028 for a 450-foot pipe that runs between two reservoirs that each have ends submerged under water? The intake end is square-edged and non-projecting. The difference in elevation between the two reservoirs is 150 feet. a).7.8 MGD b).13.3 MGD c).17.7 MGD d).23.8 MGD