6. (3 points) A sample of monatomic ideal gas undergoes a constant pressure process from A to B and a constant P4 volume process from B to C, as shown in the figure. Find the total amount B of heat associated with this two-step process. Report the heat with the 2 atm proper sign. (Just to clarify the picture, the numbers on the axes are: 1 atm and 2 atm; 1L and 2L). Hint: the numbers given on the axes are such that one could easily justify that TA = To. Based on this, one should be able to immediately conclude on the value of AU. After that, use the First Law of Thermodynamics to answer the question. 1 atm = 1.01325x105 Pa. (This L atm C problem is almost identical to a problem we solved in class. We addressed other similar problems and you had similar problems for your HW.) LL 2L V