Nuclear Chemistry Exam Questions and Correct Answers Latest Update Graded A+ (Already Passed)

Nuclear Chemistry Exam Questions and Correct Answers Latest Update Graded A+ (Already Passed) Given the nuclear equation: 14:7 N + X → 16:8 O + 2:1 H What is particle X? - Answers an alpha particle Given the nuclear equation: 14:7 N + X → 16:8 O + 2:1 H What is particle X? - Answers an alpha particle The nucleus of a radium-226 atom is unstable, which causes the nucleus to spontaneously - Answers decay Which group of nuclear emissions is listed in order of increasing charge? - Answers neutron, positron, alpha particle Which list of nuclear emissions is arranged in order from the least penetrating power to the greatest penetrating power? - Answers alpha particle, beta particle, gamma ray 1:1 H + X → 6:3 Li + 4:2 He What is X? - Answers 9:4 Be . Positrons are spontaneously emitted from the nuclei of - Answers potassium-37 What is the decay mode of 37-K? - Answers positron Which equation represents positron decay? - Answers 11:6 C → 0:+1 e + 11:5 B As 14-C decays to 14-N, the number of protons in the nucleus - Answers increases Atoms of I-131 spontaneously decay when the - Answers unstable nuclei emit beta particles Which statement best describes gamma radiation? - Answers It has a mass of 0 and a charge of 0. Which nuclear decay emission consists of energy, only? - Answers gamma radiation Which kind of nuclear radiation has high energy and no mass? - Answers gamma The half-life of a radioactive isotope is 20.0 minutes. What is the total amount of a 1.00-gram sample of this isotope remaining after 1.00 hour? - Answers 0.125g A radioactive element has a half-life of 2 days. Which fraction represents the amount of an original sample of this element remaining after 6 days? - Answers 1/8 A 40.0 milligram sample of 33-P decays to 10.0 milligrams in 50.0 days. What is the half-life of 33-P? - Answers 25 days How many days are required for 200. grams of radon-222 to decay to 50.0 grams? - Answers 7.64 days Radioactive cobalt-60 is used in radiation therapy treatment. Cobalt-60 undergoes beta decay. This type of nuclear reaction is called - Answers natural transmutation The following nuclear reaction is classified as a: 4:2 He + 27:13 Al → 30:15 P + 1:0 n - Answers artificial transmutation Which equation represents artificial transmutation? - Answers 27:13 Al + 4:2 He → 30:15 P + 1:0 n Which statement best describes a primary occurrence in an uncontrolled fission reaction? - Answers Mass is converted to energy, which is released. An uncontrolled chain reaction takes place during the - Answers explosion of an atomic bomb Given the balanced equation representing a nuclear reaction: 235:92 U +1:0 n → 142:56 Ba + 91:36 Kr + 3X + energy - Answers 1:0 n