E2B.4(a) When 3.0 mol O₂ is heated at a constant pressure of 3.25 atm, its temperature increases from 260 K to 285 K. Given that the molar heat capacity of O₂

at constant pressure is 29.4JK' mol', calculate q, AH, and AU. E2B.4(b) When 2.0 mol CO₂ is heated at a constant pressure of 1.25 atm, its temperature increases from 250 K to 277 K. Given that the molar heat capacity of CO₂ at constant pressure is 37.11 JK' mol', calculate q, AH, and AU.