- If there are 118 elements, why do only 103 tend to appear on the periodic table?

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What is the mole ratio of a compound containing 78g Potassium, 12g Carbon, and 48g Oxygen? Geography: what is the difference between detritic and klastic sediments? What is the heat of formation of hexane, C6H14 ? What is the sum of infinite geometric series where the first term is 2 and the second is 1 ?a.4 b.2 c.3 d.7 e.8? How many grams of NH3 can be produced from 2.15 mol of N2 and excess H2?

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