The first task you are assigned in your summer laboratory job is to prepare a concentrated NaOH stock solution. The molecular weight of NaOH is 40 g/m. How many grams of NaOH will you need to weigh out to obtain a 200 ml solution that has a concentration of 500 mM? 40.0 g 1.0 g 20.0 g 2.0 g 4.0 g

Q: For the particles in problem 3, determine the percent removal in a sedimentation basin with a depth…

A: Answer  We are given Before flocculation Average diameter = 20 μm  Specific gravity S = 2  After…

Q: Positive displacement pumps are used to pump

A: Positive displacement pumps are used to pump: deliver fluids at high pressure

Q: Consider a stainless steel ball with a diameter of 9 cm. What is the volume of the stainless steel…

A: Given :- Diameter of stainless steel ball, d = 9 cm Table having Density, Specific Gravity, and…

Q: EA two-stage distiller system is used to remove TDS from sea water as shown in the figure. The…

A: Given:- two stage distiller To find:- concentration

Q: Select all fluids that would exhibit vapor pressure at STP. Water O Hydrogen O Air O Mercury

A: The pressure exerted by vapour phase is called vapour pressure. Vapour pressure of liquid or solid…

Q: An unknown metal (530 g) is added into a cylindrical container (inside diameter: 5 cm) containing…

A:

Q: Calculate the R-value for the following materials:a. 100 mm thick brickb. 10 cm thick brickc. 30 cm…

A: The formula for R-value is given by, R-value=LK Where, L = thickness K = thermal conductivity

Q: (a) A strain of E. coli bacteria taken from a sample of waste water in a treatment plant are…

A: (a) N = Aekt (i) A/q at t=0 N = 20 So, 20 = A * ek*0 or, A = 20

Q: For a solution with a pH equal to 9.5, express the concentrations of H+ and OH- in units of meq/L…

A:

Q: 2: Your alloy contains 60% Ag and is at temperature 778.9°C a) Hypoeutectic or Hypereutectic? b)…

A: Given data,            alloy contains =60% Ag = WAg             Temperature=T=778.9˚c( just below…

Q: Please solve all the choices

A: Step 1: Step 2: Step 3: Step 4:Step 5:Here ,the best dose is which causes nice coagulation (high…

Q: 1: Your alloy contains 60% Ag and is at temperature 779.1°C a) What phases are present in the alloy…

A:

Q: hese chemicals would you use to calculate hardness? (b) All aqueous solutions must ge neutrality.…

A: hardness of water =?

Q: The one-hour standard for CO is 35 ppm, Calculate the equivalent concentration in mg/m3.

A: The given data is shown below: CO=35 ppm

Q: A water sample contains the following dissolved ions: [Na+] = 75 mg/l [HCO]=250 mg/1 [CH] = 100 mg/l…

A: Given data  Na+ = 75 mg/l ,   HCO3- = 250 mg/l  Ca2+ = 45 mg/l,    Cl- = 100 mg/l  Mg2+ = 48 mg/l,…

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.