HOME

Course Chapters

Calculator Fundamentals

Mathematics Review

Basic Concepts

Advanced Concepts

Section Tests

Pre-test

Post-test

Useful Materials

Glossary

Online Calculators

Redox Calculator

Kinetics Arrhenius Calculator

Thermodynamics Calculator

Nuclear Decay Calculator

Linear Least Squares Regression

Newton's Method Equation Solver

Compressibility Calculator

Units Conversion Calculator

Nomenclature Calculator

Related Information Links

Texas Instruments Calculators

Casio Calculators

Sharp Calculators

Hewlett Packard Calculators

Credits

Contact Webmaster

Nuclear Problem 2

If a watch contains a radioactive substance with a decay rate of 1.40 * 10-2 and after 50 years only 25 mg remain, calculate the amount originally present.

Back to the nuclear page.

Developed by
Shodor
in cooperation with the Department of Chemistry,
The University of North Carolina at Chapel Hill

Copyright © 1996-2008 Shodor
Please direct questions and comments about this page to
WebMaster@shodor.org