# Silver has an atomic mass of 107.868 amu and only two naturally-occurring isotopes. The Ag-109...

## Question:

Silver has an atomic mass of 107.868 amu and only two naturally-occurring isotopes. The Ag-109 isotope (108.905 amu) has a natural abundance of 48.16%. What is the mass (in amu) of the other isotope? Express your final answer using 6 significant figures.

## Atomic Mass Unit:

The most common element, carbon-12, is selected to define the atomic mass unit or amu. The unit of atomic mass is amu. Its atomic mass is defined to be exactly twelve atomic mass units, or 12 amu. Here, {eq}1 amu=1.6605\times 10^{-27}\, kg {/eq}.

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Based on the given information, we can set the equation as follows:

{eq}M=0.4816A+0.5184B\\ \rm Here:\\ \,\,\,\, \, \bullet \, M(=107.868 \, u)...

Atomic Mass Unit (AMU): Definition, Standard & Conversion

from

Chapter 9 / Lesson 15
28K

We know all matter is made of atoms, but how is the mass of an atom expressed? Explore this lesson to learn more about atomic mass units (amus), carbon-12, and amu to kilogram conversion!