Chemistry, 10.10.2019 04:30 randallmatthew6124
Air-methane mixtures can be ignited in the presence of an ignition source if the concentration of methane is between 5.0 and 15.0 mol%. a process in your plant generates a stream of air-methane mixtures at a flow rate of 700.0 kg/h, each at a methane concentration of 9.0 mol%. to eliminate the possibility of a fire, the plant has a protocol for mixing the stream with pure air to reduce the methane concentration to the lower flammability limit (5 mol% methane). a. (16 pts.) calculate the molar flow rate of air (mol/h) required to reduce the concentration to the lower flammability limit. b. (4 pts.) what is the mass fraction of oxygen in the mixture at the lower flammability limit?
Answers: 1
Chemistry, 22.06.2019 10:30
Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88
Answers: 1
Chemistry, 22.06.2019 23:30
Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.
Answers: 3
Chemistry, 23.06.2019 05:00
Question 5 match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) reactant that can produce more of the product theoretical yield c) amount of product predicted to be produced by the given reactants
Answers: 2
Air-methane mixtures can be ignited in the presence of an ignition source if the concentration of me...
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