六、A 0.60-in-diameter round sample of a carbon steel is pulled to failure in a tensile testing machine. The diameter of the sample was 0.45 in. at the fracture surface. Calculate the percent reduction in area of the sample.

4. A and B represent different substances. A and B cannot occur chemical reaction. Assuming that A and B are ideal gases, what is the entropy (in J) of mixing of 2 mol A with 3 mol of B at 300 K?Note: In(cd) = In(c) + In(d), = nIn(m)