CHEMISTRY REVIEW: FINAL EXAM

May 31, 2012 · = 1.10 liters. How many atoms of helium do you need to fill a 5.50 liter balloon? 5.5 liters 1 mole 6.02 x 1023 atoms 22.4 liters 1 mole = 1.48x1023. atoms. How many grams are in 1.6x1026 molecules of carbon dioxide (CO2)? 1.6x1026 molecules 1 mole 44.01 grams 6.02x1023 molecules 1 mole = 11,697.01 grams. What does percent composition tell you? ................
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