Ethanol Molecule Calculation: How Many C2H5OH Molecules Contain 4.2 x 10^23 Hydrogen Atoms?
Each ethanol molecule contains 6 hydrogen atoms (2 from the CH3 groups and 4 from the OH group). Therefore, the number of ethanol molecules in the sample can be calculated by dividing the number of hydrogen atoms by 6:
4.2 ￗ 10^23 H atoms / 6 = 7.0 ￗ 10^22 C2H5OH molecules
The answer is A. 7.0 ￗ 10^22.
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