Answer to Question #109277 in General Chemistry for Anastasia

Question

Gallium has two isotopes. One isotope is 69-Ga and has a relative abundance of 60.50%. The relative atomic mass of gallium is 69.70 amu. Find the relative isotopic mass of the other isotope.

Answer 1

Ar(Ga)=0.3950*x + 0.6050*69=69.70;

x=(69.70-41.745)/0.3950=70.77

Answer: 70.77 amu