Engineering, 13.11.2019 20:31 Sruyle51230
Suspended solids refers to insoluble solid particles that either float on the surface of, or are in suspension in water. they are typically operationally defined as particles that cannot pass through a 0.45 µm filter. the following information is from a laboratory test to determine the suspended solids concentration of a sample of untreated wastewater. a 100-ml sample is filtered through a 0.45 µm filter pad. the weight of the clean filter pad and crucible, both of which were dried, cooled, and then weighed, is 48.610 g. after filtration, drying at 104 ˚c, and cooling, the weight of the crucible, filter pad, and dried solids is 48.903 g. what is the concentration of suspended solids in the wastewater sample, in mg/l
Answers: 2
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 18:10
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
Engineering, 04.07.2019 18:10
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
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