Question

Silver has two isotopes, Silver-107 has a mass of 106.905 amu (52% abundant) and Silver-109 has a mass of 108.905 amu (48% abundant). What is the atomic mass of silver?

Answer 1

Answer: 107.865 amu

Step-by-step explanation:

To find the atomic mass of silver, we first multiply each isotopic mass by their % abundance, add these values together, then divide by 100.

`((106.905*52)+(108.905*48))/(100)` = 107.865 amu

So, the atomic mass of silver is 107.865 amu, which makes sense because it's between the two isotopic masses of 106.905 amu and 108.905 amu.

I hope this helps! :)