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View History Bookmarks Window Help Dolartimes Omail Heo 00.rsC Anywhere mba Facebook My Drive Google Drive Upates Ready to Instal a:CHEM 120 00 SP 02/04/18 46% Question (a point See page 60 Silver (Ag) has two stable isotopes: 107 Ag 106.90 amu,and 10Ag, 108.90amu. I abundance of each isotope (expressed as a percentagel? I the average atomic mas of stheria 107,87 am tt Hint: Let xbe the natural abundance of one of the isotopes. Then 1-xis the natural abundance of the other 1st attempt Part 1 (0.5 point) see Periodic Table &See; Hint Natural abundance ot 17Ag Part 2 (0.5 point) Natural abundance of 10Ag 3

Explanation / Answer

x = abundance of Ag

average atomic mass = atmic mass *x + atomic mass (1-x)

      107.87                  = 106.9*x + 108.9*(1-x)

                         x           = 0.515

1-x                                  = 1-0.515   = 0.485

abundance of Ag107      = 51.5%

abundance of Ag109      = 48.5%

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