Calculate the number of moles (of molecules) in the following samples. (A) 12.63 g H2O (B) 5.52 g benzene, C6H6 (C) 25.18 g ethyl alcohol, C2H5OH (D) 5.26x10^24 molecules CO2 (E) A sample of CO2 that contains 8.78x10^22 O atoms
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