We have textbook solutions for you!
Upload your study docs or become a
Course Hero member to access this document
Unformatted text preview: 7. Europium has two nautrally occurring isotopes: Eu-151 with a mass of 150.9198 amu and a natural abundance of 47.8%, and Eu-153. Use the atomic mass of europium to find the mass and nautral abundance of Eu-153. 8. Rhenium has two naturally occurring isotopes: Re-185 with a natural abundance of 37.40%, and Re-187 with a natural abundance of 62.60%. The sum of the masses of the two isotopes is 371.9087 amu. Find the masses of the individual isotopes. 9. Bromine has two naturally occurring isotopes: Br-70 with an atomic mass of 78.91 amu and Br-81 with a mass of 80.92 amu. If the atomic mass of bromine is 79.90 amu, determine the relative abundance of each isotope in a naturally occurring sample. Define Your Pride. CW: Atomic Structure Practice 3 Honors Chemistry Date: 9/30/14...
View Full Document