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1) Avogadro's Number, Moles, and Molar Mass a) How many xenon atoms are in 1.248 mol of xenon? b) How many moles of lithium are
1) Avogadro's Number, Moles, and Molar Mass a) How many xenon atoms are in 1.248 mol of xenon? b) How many moles of lithium are in 4.5168x10 atoms? c) What is the mass in grams of 0.732 mol of Pt? d) How many moles of tungsten (Z=74) are in 14.9g of tungsten? e) How many sulfur dioxide molecules are in 74.95g of sulfur dioxide? f) What is the mass of 2.83x1025 fluorine molecules? 2) Formula Mass and Mole of Compounds a) 27.115g of caffeine, C8H10N4O =? mol b) 8.41 moles of citronellal, a natural insect repellent, C10H180=? G c) 19.47g of diazepam (ingredient of Valium), C6H13CIN2O =? Molecules d) 112.48g of erythrosine, a food coloring, C20H6l4Na2O5 =? Moles e) 0.172 moles of cobalt (111) sulfate =? G
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