Homework Help: physical science

Posted by Jameisha on Sunday, November 30, 2008 at 3:54pm.

Predict which isotope of nitrogen is more commonly found, nitrogen-14 or nitrogen-15.(Hint: What is the average atomic mass listed for nitrogen in the periodic table?)

physical science - DrBob222, Sunday, November 30, 2008 at 6:24pm
The atomic mass of N listed in the table is 14.0067. Since this is an average of isotope 14.0000 and 15.0000, obviously there must be more of isotope ???? than isotope ????

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