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Two waters are in equilibrium with air, one at pH 9.5 and one at pH 7.3. these waters are mixed in 1:1 proportions. Assuming that carbonate species dominate the acid/base behavior of boh solutions and that no gas transfer occurs when they are mixed, determine the alkalinity and pH of the mixture. Will the mixture be undersaturated, supersaturated, or in equilibrium with atmospheric CO2?
Your family cabin now has a roof that is rectangular, 60 feet by 20 feet, and is covered by 2 inch thick hardwood siding and tapped wood shingles. You propose adding 2 inches of cellulose fiber insulation under the hardwood.
Deflection of a Beam, If a beam of lenght L is fixed at the ends and loaded in the centre of the beam by a point load of F newtons the deflection
A tracer study was conducted to assess groundwater velocity and showed that a slug of a conservative tracer took 34 days to travel the 10-m distance between two wells.
This distance is indicated correctly on a steel surveyor's tape whenused at a temperature of 70 degrees F and subjected to a pull of 10lbs. If in measuring a certain distance the tape indicatesthe distance to be 100 feet
Consider a piston/cylinder arrangement that has a linear spring mounted such that as the piston rises to a certain point it will encounter the spring, which will offer a downward component of force as the piston rises further.
Assume a hydrostatic condition in a cubic tank with 64ft length, 32ft width and 16ft height. The tank is filled with 15ppg( pounds per gallon) fluid. Calculate the pressure in psignat the bottom of the tank.
Consider a diver weighing 200 lb at the end of a diving board that cantilevers out over 3 ft. The diver oscillates at a frequency of 2 Hz. What is the flexural rigidity EI of the diving board
A plastic-manufacturing plant emits 1,700 scfm of exhaust at 200oC and 90 kPa. The exhaust (consisting of mostly air) contains 9 ppm phenol vapor (C6H5OH). What is the concentration of phenol vapor in the exhaust in µg/L
The beams support one-way slabs, 6 inches thick that span 20 feet center to center. Assume that the beams are 16 inches wide and 24 inches deep. Determine the dead load in pounds per linear foot for the beams, from the concrete structure alone.
WATER FLOWS IN A PIPE AT 3 m/s A valve at the end of the pipe is suddenly closed. determine the pressure rise in the pipe.
At all other times, the wind velocity is zero. Determine for each case the ration of the total energy available from the wind to the total wind energy available at the mean velocity operating continuously
Assume the collector provides this energy to a thermal storage unit (a thermal reservoir) at 220oC. A heat engine receives energy from this thermal storage unit and discharges energy by heat transfer to the surroundings at 20 C
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