SOLUTION: Element QX has 3 naturally occurring isotopes. QX-18 occurs 72.03% of the time, Qx-17 occurs 22.94% of the time and Q-16 occurs 5.03% of the time. What is the average atomic mass n

Algebra ->  Test  -> Lessons -> SOLUTION: Element QX has 3 naturally occurring isotopes. QX-18 occurs 72.03% of the time, Qx-17 occurs 22.94% of the time and Q-16 occurs 5.03% of the time. What is the average atomic mass n      Log On


   

Question 214603: Element QX has 3 naturally occurring isotopes. QX-18 occurs 72.03% of the time, Qx-17 occurs 22.94% of the time and Q-16 occurs 5.03% of the time. What is the average atomic mass number that would be reported on the periodic table?

thank you
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
18*.7203 + 17*.2294 + 16*.0503
=17.67
.
Ed