Calculate the number of moles of one level teaspoon of salt (NaCl). Repeat for all the other compounds (Hint: 1000mg = 1g). Fill in the appropriate boxes on the Data Table. Show your work.
Calculate the number of moles of each element in one level teaspoon of salt (NaCl). Repeat for all the other compounds. Fill in the appropriate boxes on the Data Table. Show your work.
Calculate the atoms of each element for one level teaspoon of salt (NaCl). Repeat for all the other compounds. Fill in the appropriate boxes on the Data Table. Show your work.
You measured equal volumes for each of the different compounds. Which of the compounds has the greatest number of moles in one teaspoon?
Which of the compounds has the greatest total number of atoms?
Why can you use the technique of measuring volume as a means of counting.
One teaspoon is equal to 5 grams. So, the number of moles of NaCl can be determined by dividing 5 g by the molecular weight of NaCl which is 58.45 g/mol. 5/58.45 = 0.0855 mol NaCl
2. Since the stiochiometric ratio of Na and Cl in NaCl is 1:1, the number of moles of Na and Cl are the same as that of NaCl.
3. To get the number of atoms, we multiply the number of moles by the Avogadro's number which is 6.022x10^23. Since Na and Cl have the same number of moles, they also have the same number of atoms which is: 0.0855 (6.022x10^23) = 5.15x10^22 atoms
4,5,6. The compound with the greatest amount of teaspoon is the one with the greater density and lower molecular weight. You can convert volume to number of moles of atoms if you know the density and the molecular weight of the substance.
