Physics, 31.10.2019 06:31 amandaparrish2323
Which starting condition would produce the larger volume of carbon dioxide by combustion of ch4(g) with an excess of oxygen gas to produce carbon dioxide and water: (a) 2.00 l of ch4(g); (b) 2.00 g of ch4(g)? justify your answer. the system is maintained at a temperature of 75 c and 1.00 atm.
Answers: 2
Physics, 21.06.2019 21:50
Apossible explanation for a set of facts that can be tested by further investigation is called
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Physics, 22.06.2019 02:50
20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.
Answers: 3
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 22.06.2019 09:00
As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy
Answers: 2
Which starting condition would produce the larger volume of carbon dioxide by combustion of ch4(g) w...
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