9. Uranium-235 undergoes nuclear fission as shown in the diagram below. a) Select which element does X represent? b) On your notes, write the complete formula for the nuclear reaction to include the chemical symbols with atomic numbers, mass numbers, and the proper coefficients for the neutrons.      Kr-98 Kr-96 Kr-95 Kr-97

Short Response. Directions: Write a balanced nuclear equation for the alpha and beta decay of each of the following II. A. Alpha Decay 1. 3No 2. 25Cf 251 102 98 B. Beta Decay 1. Strontium-92 2. Potassium-42

5. Krypton-85 is an inert radioactive noble gas with a half-life of approximately 10.76 years. a. Write an exponential function to model this situation and define each variable. ( b. Determine what fraction of a sample of Krypton-85 will remain after 86.08 years. State the answer as an exact fraction value. ( C. Determine how long will it take for a sample of Krypton-85 to decay to 1/64 of its original mass. Round your answer to the nearest hundredth of a year.

Question 11 The most used 'nuclear fuel" for nuclear fission is Uranium-235. a) Explain what happens to a Uranium-235 nucleus when it undergoes nuclear fission. [Suggested word count 70] b) Write an equation and explain chain reaction and critical mass. (About 80 words) [4.2] (ROMEIO Uranium-235 TERSEB HAUTRUMAS BRGHINI PIGMERIN Januar HERRA PRAMON RACHUNKANI Smart Hom CASTROENTEROLEH Buntate-defen MEDIKAMETESTRANA MARDIRHAMMASRUTUBIG VENENARISTRERADE INCENGINES MAMAYE MIESTORCENT HORORE 6790EFATEST HELADINA MAGNASTOST Batman Thamasikan AGAINSIZE musmetentiel nucleus BATOTOHATROIS Th VERMENSENTRA LITERATU ZIR FUNGO24 RUSTRATE BINACZOGGE AMARANGHIENG PUIGHUSHANBE BABILMESA MATEMOHONRAKE DOCENTEKEN PAMISETAMOR QUEMESTASKERAT MIGZAMABESH unteffantennes INSTURISTERIOS DREOMINIAL Internat PARAN P FESTOONBASSINGENEZAMANTESCHICOTCH BROTHERS BRUGE LISTRUALESATARESSAASTE RUCHUONEISSENFUSION USTAREFASORASTENE