Ch.19 - Nuclear ChemistryWorksheetSee 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: Analysis of a quartz crystal shows it to contain 25% Uranium 235 and 75%  Lead 207. If the half life of Uranium 235 is 704 million years how old is the quartz crystal?

Solution: Analysis of a quartz crystal shows it to contain 25% Uranium 235 and 75%  Lead 207. If the half life of Uranium 235 is 704 million years how old is the quartz crystal?

Problem

Analysis of a quartz crystal shows it to contain 25% Uranium 235 and 75%  Lead 207. If the half life of Uranium 235 is 704 million years how old is the quartz crystal?

Solution

We have to determine the age of a quartz crystal which contains 25% U-235 and 75% Pb-207.

Uranium is a radioactive metal which decays by a series of reactions to form Pb-207.

The half-life of a radioactive element is the time that it takes for 50% of the element to decay.

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