In the mid 1930s enrico fermi bombarded uranium with thermal neutrons and observed the release of a large amount of energy. this happened because the heavy uranium nucleus split into two lighter nuclei, releasing two or three neutrons along with a large amount of energy. what is this process called?

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?