Engineering, 05.11.2019 01:31 mytymikey123
Methanol is toxic for humans if they ingest liquid methanol or inhale methanol vapor in significant quantities. when inhaled in concentration greater than 1000 ppm, death has been reported. humans metabolize methanol into formic acid which is then converted into formate. formate deprives bodily tissues of oxygen. rabbits and rats are among a subset of animals which are not able to excrete as much formic acid, so they are not as sensitive to methanol as humans. the ld50 (lethal dose for 50% of a population) of rats is 64,000 ppm for four hours of exposure. some rats may become ill or die when inhaling concentrations around 44590 ppm. suppose an improperly capped bottle of methanol allows methanol vapor to escape into a room. at what temperature is the room when the equilibrium concentration of methanol vapor is 44590 ppm? assume that the atmospheric pressure in the room is 760 mm hg. (note: to convert ppm to mole fraction, divide the ppm number by 106.)
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Engineering, 04.07.2019 18:10
What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.
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Engineering, 04.07.2019 18:10
During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false
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Engineering, 04.07.2019 18:10
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
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Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Methanol is toxic for humans if they ingest liquid methanol or inhale methanol vapor in significant...
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