A rectangular field is 42 chains by 25 chains. How many hectares are in the field? (Note: 10 sq ch = 1 acre and 1ha = 2.5 acres.)
What will be an ideal response?
42 ha
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
What is the volume of this rectangular core box, in cubic inches?
Determine the equilibrium constant for this reaction at 400 K. State and justify any assumptions or approximations that you make.
A vessel initially contains 10 moles of pure liquid A at P=5 atm and T=400 K. The following reaction occurs isothermally and isobarically until equilibrium is achieved:
A ?2B
Thermochemical data on the two compounds in the liquid phase is presented in the following table. Values of G and H were obtained with a reference pressure of 1 bar:
The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River?
What will be an ideal response?