1. The problem statement, all variables and given/known data Engine needs airflow of 1 m3/min (std. p=101.325kPa, T=293.15K) it is suplied by machine working at p=700kPa. 2. Relevant equations How big flow is requied from the machine to supply engine with air? 3. The attempt at a solution Tryed using ideal gas law pV=nRT 1) I found out n, using n=(pV)/(RT)=(101,325*1)/(8,314*293,15)=0,04157 2)I used 2nd preasure to add to to eq. V2=(nRT)/p=(0,04157*8,314*293,15)/700=0,14475m3/min Have no way to check if that is correct or not.