Why is percentage yield less than 100?

Related questions

1. Do you have to stop on yield?
2. What is difference between yield and production?
3. What is the difference between current yield and YTM?
4. Why is actual yield less than theoretical yield?
5. Is SEC yield important?
6. What is a yielding person?
7. What is the yield on bonds?
8. Does left turn always yield?
9. When must you yield to pedestrians?
10. What does yielding mean in driving?

Tags

1. #always
2. #percent
3. #present
4. #reactions
5. #impurities
6. #material
7. #starting
8. #however
9. #reactants
10. #reasons
11. #several
12. #often
13. #incomplete
14. #actual
15. #completely
16. #smaller
17. #product
18. #yield
19. #products
20. #desired
21. #which
22. #converted
23. #react