| Sections | |||
|---|---|---|---|
| Periodic Table | 28 mins | 0 completed | Learn |
| Mole Concept | 37 mins | 0 completed | Learn Summary |
| Isotopes | 12 mins | 0 completed | Learn Summary |
| Mass Spectrometry | 9 mins | 0 completed | Learn |
| Subatomic Particles | 8 mins | 0 completed | Learn |
| Atomic Theory | 16 mins | 0 completed | Learn |
| Thomson's Cathode Ray Tube Experiment | 8 mins | 0 completed | Learn |
| Oil Drop Experiment | 7 mins | 0 completed | Learn |
| The Chadwick Neutron Experiment | 6 mins | 0 completed | Learn |
| Gold Foil Experiment | 10 mins | 0 completed | Learn |
| End of Chapter 2 Problems | 28 mins | 0 completed | Learn |
| Additional Guides |
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| Periodic Table Charges |
| Calculating Molar Mass |
| Calculating Grams to Moles |
You are working in the laboratory preparing sodium chloride. Consider the following results for three preparations of the compound:
Case 1: 39.34 g Na + 60.66 g Cl 2 ⟶ 100.00 g NaCl
Case 2: 39.34 g Na + 70.00 g Cl 2 ⟶ 100.00 g NaCl + 9.34 g Cl 2
Case 3: 50.00 g Na + 50.00 g Cl 2 ⟶ 82.43 g NaCl + 17.57 g Na
Explain these results in terms of the laws of conservation of mass and definite composition.
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