Average Atomic Mass Calculator

Understanding Average Atomic Mass

Average atomic mass is the weighted average of the masses of an element’s naturally occurring isotopes, based on their relative abundances. It reflects the contribution of each isotope to the element’s overall mass, as found on the periodic table. This calculator makes it easy to compute the average atomic mass by inputting isotope masses and their percentages.

Why Calculate Average Atomic Mass?

• Chemistry Applications: Essential for stoichiometry, molar mass calculations, and understanding element behavior in reactions.
• Isotope Analysis: Helps students and researchers analyze isotopic distributions in samples.
• Periodic Table Insight: Explains why atomic masses on the periodic table are not whole numbers.

How to Use This Calculator

Follow these steps to calculate the average atomic mass:

• Enter the mass (in amu) and abundance (as a percentage) for each isotope of the element.
• Add or remove isotope input fields as needed using the provided buttons.
• Click "Calculate" to view the average atomic mass, a breakdown of contributions, and a chart.
• Use "Save Inputs" to store your data and "Load Saved Inputs" to retrieve them later.

This tool is ideal for chemistry students, educators, and researchers needing precise atomic mass calculations. It also provides insights into isotopes and their significance in science.