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A stack was sampled for 5 minutes. The gas velocity (at stack conditions) through the sampler was 15.0 m/s and the area of the sample probe was 4 square cm. The net mass of particulates collected was 0.40 grams.
a. Calculate the concentration of particulates in the stack in micrograms per cubic meter.
b. The temperature in the stack is 350 degrees F and the pressure is 725 mm Hg. If the total flow rate of gas out of the stack is 200 standard cubic meters per second, calculate the total mass emissions of particulates out of the stack in kg/day.
You have a standard card deck of 52 cards. Select one card, find P[heart/ace]. B.) You have a deck of 51 cards, which happens to be missing the eight of diamonds, Find P(heart/ace). C.) In the situation above find P (spades/8).
A canal was constructed running parallel to a river 1500 ft away. Both fully penetrate a sand aquifer with a hydraulic conductivity of 1.2 ft/d. The area is subject to rainfall of 1.8 ft/y and evaporation of 1.3 ft/y.
A 100% saturated soil has a void ratio of 1.33 and water content of 48%. Find the unit weight of soil in lb/ft^3 and specific gravity of solids
What is the percentage error in the bulk unit weight if the soil is the percentage error in the bulk unit weight if the soil is 95% saturated but assumed to be 100% saturated
Gas is flowing in a long 9-in-diameter pipe from A to B. At sectionA the flow is 0.65 lb/sec while at the same instant at section Bthe flow is 0.72 lb/sec. The distance between A and B is 750 ft.
The gases are expanded to 140 kPa with a reversible adiabatic process. Calculate the work done by the gases, assuming they can be approximated by air with constant specific heats.
The discharge through a 6.0 ft wide rectangular channel is 200.0 ft^3/s. Find the conjugate depths of the jump formed in such a channel if 3.5 ft of energy head is lost through it.
Estimate the number of filters required and calculate the area of each filter (ft2), assuming that a length-to-width ratio (L:W) of 4:1 is employed in constructing the rapid sand filters and suing a filtration rate of 6 gpm/ft2.
the cash flow sequence $70+4k, where k is in years and cash flow is in $1000. What is the future work of the entire cash flow series in year 10 at 10% per year
One blend that is gaining popularity is E85, which is 85% ethanol and 15% gasoline. E85 is 80% cleaner burning than gasoline alone, and it reduces our dependency on foreign oil. But a flex-fueled car costs $1,000 more than a conventional gasoline-..
A rectangular landfill in the New England area is 175 m in width, and sloped at the uniform angle of 75 degrees. Its cover system includes a drainage layer constructed of clean, medium sand (Ks = 10^-2 cm/s).
the fixture ac is designed with a screw adjustment to regulate the height of the 900 n load supported by the roller
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