Mass and the Mole

the mole Labname

Procedures: Mass the samples at each station; Use dimensional analysis; label your answer and use sig. figs; and your answers.

Station #1 / 1. Mass the empty container.
Station # 2 - Lead
4. Molar mass of lead: / 2. Mass the sample.(with the container)

3. Mass of sample (without the container)
5. Moles of Lead. (start with the mass of your sample)
6. Atoms of Lead (start with the mass of your sample)
Station #3–Water
9. Molar mass of water: / 7. Mass the sample. (with the container)

8. Mass of sample (without the container)
10. # of moles of water (start with the mass of your sample)

11. # of molecules of water (start with the mass of your sample)
12. # of oxygen atoms present. (start with the mass of your sample)
Station #4 – Sodium Chloride
15. Molar mass of sodium chloride: / 13. Mass the sample. (with container)
14. Mass of salt. (without the container)
16. # of moles
17. # of sodium atoms. (start with the mass of your sample)
Station #5 – Magnesium Sulfate;

20. Molar mass:
/ 18. Mass the sample. (with container)
19. Mass of salt. (without container)
21. Moles (start with the mass of your sample)
22. # of magnesium atoms present. (start with the mass of your sample)
23. # of oxygen atoms present (start with the mass of your sample)
St. #6 NaHCO3.
Sodium Bicarbonate;
26. Molar mass: / 24. Mass the sample. (with the container)
25. Mass of salt. (without the container)
27.# of moles of sodium bicarbonate.
28.# of oxygen atoms. (start with the grams of your sample)
Station #7 – Calcium Carbonate;
31. Molar mass:
/ 29. Massthe sample. (with the container)
30. Mass the sample (without the container)
32. # of moles present
33. # of formula units present (start with the mass of your sample)
34. # of atoms present in calcium carbonate (start with the mass of your sample)

Mole lab rubric /96

Lab set up

____ 3 Mole lab put in lab notebook according to lab instructions – title page; title; objectives; procedure and materials; tables cut and pasted/taped in notebook according to lab instructions

____5Mole lab physical completed within one week of assigned lab

____3Lab neat, in ink, rubric included

Station 1 & 2

____1 1. Mass of empty container reported to the correct sig figs

____ 12. Mass of sample with the container reported to the correct sig figs

____ 13. Mass of sample without the container reported to the correct sig figs

____ 24. Correct molar mass for lead with label g/mol

____45. Dimensional analysis is used; answer labeled and circled; correct sig figs

____46. Dimensional analysis is used; answer labeled and circled; correct sig figs

Station 3

____ 17. Mass of sample with the container reported to the correct sig figs

____ 18. Mass of sample without the container reported to the correct sig figs

____ 29. Correct molar mass for water with label g/mol

____410. Dimensional analysis is used; answer labeled and circled; correct sig figs

____411. Dimensional analysis is used; answer labeled and circled; correct sig figs

____412. Dimensional analysis is used; answer labeled and circled; correct sig figs

Station 4

____113. Mass of sample with the container reported to the correct sig figs

____ 114. Mass of sample without the container reported to the correct sig figs

____ 215. Correct molar mass for NaCl with label g/mol

____416. Dimensional analysis is used; answer labeled and circled; correct sig figs

____417. Dimensional analysis is used; answer labeled and circled; correct sig figs

Station 5

____118. Mass of sample with the container reported to the correct sig figs

____ 119. Mass of sample without the container reported to the correct sig figs

____ 220. Correct molar mass for magnesium sulfate with label g/mol

____421. Dimensional analysis is used; answer labeled and circled; correct sig figs

____422. Dimensional analysis is used; answer labeled and circled; correct sig figs

____423. Dimensional analysis is used; answer labeled and circled; correct sig figs

Station 6

____124. Mass of sample with the container reported to the correct sig figs

____ 125. Mass of sample without the container reported to the correct sig figs

____ 226. Correct molar mass for NaHCO3 with label g/mol

____427. Dimensional analysis is used; answer labeled and circled; correct sig figs

____428. Dimensional analysis is used; answer labeled and circled; correct sig figs

Station 7

____129. Mass of sample with the container reported to the correct sig figs

____ 130. Mass of sample without the container reported to the correct sig figs

____ 231. Correct molar mass for CaCO3 with label g/mol

____432. Dimensional analysis is used; answer labeled and circled; correct sig figs

____433. Dimensional analysis is used; answer labeled and circled; correct sig figs

____434. Dimensional analysis is used; answer labeled and circled; correct sig figs