CHEMICAL PRINCIPLES 8TH EDITION BY STEVEN S. ZUMDAHL

Chemical Principles 8th Edition by Steven S. Zumdahl – Test Bank Sample Test Chapter_03_Stoichiometry 1. Bromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79 contains a. 79 protons, 79 electrons, and 35 neutrons. b. 35 protons, 44 neutrons, and 35 electrons. c. 44 protons, 44 electrons, and 35 neutrons. d. 34 protons and 35 electrons only. e. 35 protons, 79 neutrons, and 35 electrons. ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 3.1 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 2. The atomic mass of rhenium is 186.2. Given that 37.1% of naturalrhenium is rhenium-185, what is the other stable isotope? a. b. c. d. e. ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 3.1 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 3. Consider the new element moonium, atomic number 118, atomic mass 273.2 g. The nucleus of an atom of moonium-273 contains a. 118 protons, 118 alpha particles.