Mr. Rаinоut is а pаtient with a lоng histоry of COPD, presents to the ED with an exacerbation precipitated by bilateral pneumonia which resulted in Mr. Rainout to be placed on a mechanical ventilator. He has been in the MICU for the past 4 days with very little noted improvement on his condition. The following parameters are measured:PB = 754 torrVent Settings: A/C 14, Vt 430 mL, PEEP 12 cmH2OpH = 7.29PaCO2 = 83 torrPaO2 = 48 (SaO2 = 64%)PvO2 = 33 (SvO2 = 32%)Hb = 18.9 g/dLFiO2 = 0.30QT = 3.7 mL/mina. Calculate the alveolar air.b. Calculate the P/F ratio and state what it indicates.c. Calculate the total oxygen delivery in one minute.