I chlorine disinfection 3-log reduction in giardia- cysts
In Chlorine disinfection (3-log reduction in Giardia- Cysts), determine the water pH for a contact time of 90 minutes using a chlorine concentration of 2 mg/L at 20 degrees C
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A water treatment plant is processing water at s flow rate of 0.26m^3/s. The hydraulic detention times for the rapid mix tank, flocculation basin and the rectangular sedimentation basin are 10 sec, 30 min, 60 min, respectively.
A 31.3g wafer of pure gold initially at 69.3^\circ C is submerged into 64.1g of water at 27.7^\circ C in an insulated container. What is the final temperature of both substances at thermal equilibrium
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
The absolute viscosity and density of water are 1.4X10^-3 Pa-s and 998 kg/m^3, respectively. For a head loss of 0.1 m, determine the filtration rate (m/d) if the depth of this layer of sane is 0.1m
A wastewater treatment plant produces 34, 500 pounds of secondary sludge each day. Wastewater flows into the plant at a rate of 5.6 MGD and has an influent BOD of 325 mg/L. How many pounds of BOD are destroyed by this plant each day
Suppose that 28g of each of the following substances is initially at 25.0^\circ C. What is the final temperature of each substance upon absorbing 2.30kJ of heat? Express in two significant figures a. Gold b. Silver c. Aluminium d. Water
Minimum number of words 500, referencing with Harvard style and the number of references not less than three Academic Articles or books.
Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies (in J). 1. 103.7 MHz (typical frequency for FM radio broadcasting) 2. 1100 kHz
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Erik Erickson was one of the few psychologists to view aging as part of human development. His theory of psychosocial development puts forth
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Generate one practical, real-world example of how nature and nurture can interact to affect biological development at any point from conception to 2-years
If you wanted to interrogate the internal validity of the study, what would you look for?
According to Dr. Jerome Bruner, the cognitive revolution was successful only partially because: Question Select one: a. Researchers focused on