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Q: If 5.0 moles of propane react, how many molecules of water will be formed? A. B. C. D.
A: Propane is C3H8 The balanced equation is: C3H8 + 5 O2 - > 3 CO2 + 4 H2O From the balanced equation you can see that for each mole of C3H8 you obtain 4 moles of H2O. moles H2O = 5.0 moles C3H8(4 moles H2O/1 mole C3H8) = 20 moles H2O [ formed Use Avogadro's number to find the number of molecules. molecules H2O = 20 moles H2O(6.02 x 10^23 molecules/1 mole) = 1.20 x 10^25 H2O molecules ]
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Asked 10/26/2012 7:54:57 AM
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