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Suppose a ponds water contains 10.0 mg/L of some algae, which can be represented by the chemical formula C6H15O6N. Using the following reactions:
C6H15O6N + 6 O2 -> 6 CO2 + 6 H2O + NH3
NH3 + 2 O2 -> NO3- + H+ + H2O
a. Find the theoretical carbonaceous oxygen demand (CBOD)
b. Find the nitrogenous oxygen demand (nBOD)
c. Find the total theoretical (carbinaceous plus nitrogenous) oxygen demand (ThOD)
A fluid flows into a plug flow reactor of volume, V, with volumetric flow rate, Q. Inflow contains species A and B and concentrations A0 and B0. Within reactor, species A undergoes first order reaction producing B... R=k[A].
The maximum vertical load and horizontal load have been identified and shown in the figure. Under this loading condition, you are asked to determine the horizontal deflection of joint C.
If the flow that you determined in (b) occurred as rainfalluniformly over the earth's surface, what would be the mean annualrainfall (cm/y)?
A 2.50-g sample of a large biomolecule was dissolved in 13.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
Drawdown at a 0.20-m-diameter, fully penetrating well, which has been pumping at the rate of 1000 m^3/day for a long enough time that steady-state conditions have been reached, is determined to be 0.70 m.
A bicyclist travels on a level path. The frontal area of tje cyclist and the bicycle is 2 ft^2 and the drag coefficient is .8. The specific weight of aire is .075 lb/ft^3
A drilling engineer wishes to support pipes of length L on blocks so that the magnitude of the bending moment in the pipes directly over the supports is equal to the magnitude of the bending moment at the center of the pipes.
An object is submerged in a water tank and tethered by a line to the bottom of the tank. If the object has a density of 45 kg/cubic meter and a volume of 2.5 cubic meters, what is the tension in the line?
The phone lines to an airline reservation system are occupied 40% of the time. assume that the events that the lines are occupied on successive calls are independent. assume that 20 calls are placed to the airline.
Determine the components Fa and Fb of the 4.2 kN force along the oblique axes a and b. Determine the projections Pa and Pb of F onto the a- and b-axes.
A wire has a resistance of 1.2×10-2 . What will the wire's resistance be if it is stretched to twice its original length without changing the volume of the wire
Cooling at constant pressure followed by heating at constant volume. Calculate Q, W, change in U, and change in H for each of these processes, and sketch the paths of all processes on a single PV diagram.
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