Average Atomic Mass Additional Practice (Answers on next page)
What is the average atomic mass of Hafnium if out of 200 atoms: 10 have a mass of 176, 38 have a mass of 177,
54 have a mass of 178, 28 have a mass of 179, and 70 have a mass of 180?
The Average Atomic Mass of Hafnium= _________________________________________
Rubidium is a soft, silvery-white metal that has two common isotopes: Rb-85 and Rb-87. What is the average
atomic mass of rubidium if the abundance of Rb-85 is 72.2% and the abundance of Rb-87 is 27.8%?
Average Atomic Mass of Rubidium= _______________________________________________
Titanium has five common isotopes: Ti-46 (8.0%) Ti-47 (7.8%) Ti-48 (73.4%) Ti-49 (5.5%) and Ti-50 (5.3%).
What is the average atomic mass of Titanium?
Average Atomic Mass of Titanium= __________________________________________________
Average Atomic Mass Additional Practice
What is the average atomic mass of Hafnium if out of 200 atoms: 10 have a mass of 176, 38 have a mass of 177,
54 have a mass of 178, 28 have a mass of 179, and 70 have a mass of 180?
The Average Atomic Mass of Hafnium= ____________178.55 amu____________________
Rubidium is a soft, silvery-white metal that has two common isotopes: Rb-85 and Rb-87. What is the average
atomic mass of rubidium if the abundance of Rb-85 is 72.2% and the abundance of Rb-87 is 27.8%?
Average Atomic Mass of Rubidium= _____________85.56 amu________________________
Titanium has five common isotopes: Ti-46 (8.0%) Ti-47 (7.8%) Ti-48 (73.4%) Ti-49 (5.5%) and Ti-50 (5.3%).
What is the average atomic mass of Titanium?
Average Atomic Mass of Titanium= ___________47.92 amu____________