Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the other isotope?
A) 70.932 amu
B) 70.928 amu
C) 70.920 amu
D) 70.924 amu
Answer: D) 70.924 amu
Chemistry MC
Chemistry Chapter 2
Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the other isotope?