Ch.2 - Atoms & ElementsSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Rubidium (Rb) has only two naturally occurring isotopes. The first isotope has a mass of exactly 86.909 amu and the second isotope has a percent abundance of 72.17%. What is the mass of the second isotope in amu? a. 83.99 g/mol b. 84.91 g/mol c. 85.49 g/mol d. 85.49 g/mol e. 84.91 g/mol

Problem

Rubidium (Rb) has only two naturally occurring isotopes. The first isotope has a mass of exactly 86.909 amu and the second isotope has a percent abundance of 72.17%. What is the mass of the second isotope in amu?

a. 83.99 g/mol

b. 84.91 g/mol

c. 85.49 g/mol

d. 85.49 g/mol

e. 84.91 g/mol