Mass Balances, Mole Balances and Partial Pressures Air and carbon dioxide (CO2) are mixed together in a simple “T” pipe. Air at 3 atm pressure and 30 oC enters one end of the “T” at a flow rate of 2 kmol/minute. CO2 at 3 atm pressure and 30 oC enters the other end of the “T” at a flow rate of 4 kmol/min. The two gas streams exit from the middle of the “T” at 30 oC and 3 atm. The molecular weight of CO2 is 44.01. No reactions take place between air and CO2. a.Sketch the problem and add clear labels to it b.Calculate the concentration of CO2entering in kg/m3c.Calculate the concentration of N2 entering in lbmol/ft3. Air can be assumed to be 79% N2and 21% O2 (mole basis). d.Calculate the concentration of CO2 in the exiting stream in mol/cm

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Principal Quantities and EOS

A physical quantity represents the physical state of a system. It is expressed as the product of a number and unit. The basic quantities used in science are length, mass, and time. The principal quantities are the quantities that are independent of other quantities.