Question

CHM112 practice test 4 1) Based on the signs for change in enthalpy and entropy wither a process is always spontancous never ( this is an incomplete problem shoet but is should be of some help) spontancous or spontaneous only under certain condition of temperature. 2) Is radioactive decay natural or man-made ? 3) The sun is powered by a ion_nuclear reaction. (fission, fusion) 4) For each of the following radioactive nuclides determine the type of radioactive decay they will most likely under go ) C-14 -b) Am-241 5) Can a nuclear reactor undergo a nuclear explosion? 6) what is the % U-235 in a nuclear bomb? a)15% b)4% c) 99.9% d)996 14) If a reaction is exothermic the temperature of the solution that the reaction is taking place in will go 15)When a bond is broken energy must be (up, down) c) energy is not involved b) released a)absorbed AS for the following reaction? 16) Which relationship or statement best describes Pb(s) + Cl2(g)-PbCl:s) 17). Select the nuclide that completes the following nuclear reaction 20). The isotopes l'si,RSi and soSi are all stable, while 24Si İsradioactive. The mode ofdecay for asi is most likely to be A. positron decay. B. alpha decay. C. beta decay. D. gamma decay. E. fission 21). Identify the missing species in the following nuclear transmutation. с.lu D, Ille В.Зін A, 211

Answer 1