Answer:
Look at my answer to the last one, and see if you can solve this one on your own!
After you try it, I can let you know if you got it right :)
D) 59 (protons+neutrons=mass)
Answer:
90.2%
Explanation:
% yield = actual yield/ theoretical yield * 100%
% yield = (312/346)*100% = 90.2%
