Question

(2 points) Write down the general mass balance equation for any given system Simplify it for steady-state system with NO chemical reaction. a) b) (3 points) 100 mole of air consists of 79 mole% of N2 and 211n ole% of02. Calcula concentration of O2 in mole/m3, if the total pressure is 1.5 atm and the temperatur 25 C. The molecular weights of Nz and O; are 28 Ibm/ Ibmole and 32 lbnf/ Ibmole is respectively. Assume air as an ideal gas and R - 0.08206 m3 atm/mol.K

Answer 1

b) Here if the mass of oxygen was given in KG, we could divide the mass with Molecular weight to get number of moles. Here the number of moles of oxygen is given directly.