Suppose that a college of engineering has seven departments, which we denote by a, b, c, d, e, f, and g. a. each department has one representative on the college’s student council. from these seven representatives, one is to be chosen chair, another is to be selected vice-chair, and a third will be secretary. how many ways are there to select the three officers? b. three of the seven representatives are to be selected to attend a statewide convention. how many ways are there to select the three officers? c. which one of these do you think will have more objects in the collection?

Which of the following statements are true? (select all that apply.) a quasi-static process is one in which the system is never far from being in equilibrium. when a system can go from state 1 to state 2 by several different processes, the amount of heat absorbed by the system will be the same for all processes. the internal energy of a given amount of an ideal gas depends only on its absolute temperature. when a system can go from state 1 to state 2 by several different processes, the work done on the system will be the same for all processes. when a system can go from state 1 to state 2 by several different processes, the change in the internal energy of the system will be the same for all processes. for any substance that expands when heated, its cp is greater than its cv.