Question

two isotopes of rubidium occur naturally, Rb with mass of 85 and atomic number of 37 at 72.17% (84.91 amu) and Rb with mass of 87 and atomic number of 37 at 27.83% (86.91 amu). Calculate the atomic mass for rubidium using the weighted average mass method.

Name: two isotopes of rubidium occur naturally rb with mass of 85 and atomic number of 37 at 7217 8491 amu and rb with mass of 87 and atomic number of 37 at 2783 8691 amu calculate the atomic mass 09898
Uploaded: 2022-06-22T10:55:07-08:00
Duration: 1 min 13 s
Channel: Ma Ednelyn Lim
Description: two isotopes of rubidium occur naturally rb with mass of 85 and atomic number of 37 at 7217 8491 amu and rb with mass of 87 and atomic number of 37 at 2783 8691 amu calculate the atomic mass 09898

          two isotopes of rubidium occur naturally, Rb with mass of 85 and atomic number of 37 at 72.17% (84.91 amu) and Rb with mass of 87 and atomic number of 37 at 27.83% (86.91 amu). Calculate the atomic mass for rubidium using the weighted average mass method.

Added by Matthew S.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Ma Ednelyn Lim

06/22/2022

Step 1

Fractional abundance of Rb-85 = 72.17% / 100% = 0.7217 Fractional abundance of Rb-87 = 27.83% / 100% = 0.2783 Show more…

Show all steps

Thanks for your feedback!

two isotopes of rubidium occur naturally, Rb with mass of 85 and atomic number of 37 at 72.17% (84.91 amu) and Rb with mass of 87 and atomic number of 37 at 27.83% (86.91 amu). Calculate the atomic mass for rubidium using the weighted average mass method.