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(a) How is raw pig iron extracted from iron oxide ores?
(b) Write a typical chemical reaction for the reduction of iron oxide (Fe2O3) by carbon monoxide to produce iron.
(c) Describe the basic oxygen process for converting pig iron into steel.
An engineering student is driving on a level roadway and sees a construction sign 180 m ahead in the middle of the roadway. The student strikes the sign at 56 kph. If the student was traveling at 90 kph when the sign was first spotted, what was th..
The first alternative is deep-well pumping at an annual cost of $10500. The second alternative is to instal an 18 inch diameter pipeline from a local surface reservoir at a first cost of $25000 and an annual pumping cost of $7000.
The ½ inch pipe was found to have an average friction factor of 0.0129 and the ¾ pipe had an average friction factor of 0.0209. The length of the pipes between the two manometer connections are 60 inches each.
Using the method of Lee et al., predict the temperature required in an isothermal plug flow incinerator to reduce the xylene level in a waste gas from 100 ppm to 10 ppm. Assume a residence time of 0.7 sec.
How much money should an environmental soil cleaning company borrow to finance a site reclamation project if it expects revenue of $140,000 in the first year increasing by 3% per year over the 5-year cleanup period? The interest rate is 8%.
Assume you are responsible for determining the maximum load that can be carried by a rectangular barge that is 8 m wide and 18 m long. The water line when the barge is empty is 3 m below the level of the cargo deck.
Assuming that the average stack gas velocity is 10.0m/s and the stack is circular with a 3.0 meter diameter, calculate the mass emissions rate of NO2 in kg/day.
For the data given below, derive the 2-hr unit hydrograph for a watershed having a drainagearea of 216 km^2, assuming a constant baseflow of 20 m^3/s.
A container with a plunger compresses one pound mole of an ideal gas from 1 atmospheres pressure to 10 atmospheres. Calculate the amount of work done if the process is considered to be polytropic.
where u(t) is in vehicles per minute and t is in minutes. When will the queue clear?
Assuming the origin is placed where the bullet begins to move, the force (in newtons) exerted by the expanding gas on the bullet is 18000 + 7000x - 20000x2, where x is in meters.
A hypothetical water treatment train consisting of coagulation/flocculation unit, filtration unit and chlorination system is used to treat surface water characterized by bacterial concentration of 800,000 CFU/L.
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