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| 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 |
The two isotopes of potassium with significant abundances in nature are 39K (isotopic mass = 38.9637 amu, 93.258%) and 41K (isotopic mass = 40.9618 amu, 6.730%). Fluorine has only one naturally occurring isotope, 19F (isotopic mass = 18.9984 amu). Calculate the formula mass of potassium fluoride.
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