A paperclip is measured and found to have a mass of 1.2 g. The paperclip is then placed into water. The initial volume of water is 22.0 ml, but when the paperclip is dropped in, the water level rises to a volume
of 22.9 ml. What is the density of the paperclip?

Solid tin exists in two forms: white and gray. for the transformation sn(s, white) → sn(s, gray) the enthalpy change is -2.1 kj/mol and the entropy change is -7.4 j/(mol*k). a. calculate the gibbs free energy change for the conversion of 1.00 mol white tin to gray tin at -30℃. b. will white tin convert spontaneously to gray tin at -30℃? c. at what temperature are white and gray tin thermodynamically equivalent at a pressure of 1 atm?