Ethanol is used widely as a solvent in laboratories for various chemical reactions. A laboratory technician takes 50.0 mL of
ethanol and dilutes it to 100.0 mL with distilled water. What is the percentage concentration by volume of the resulting
solution?
Use vol% - volume of solute
volume of solution X 100
33.3%
50.0%
100%
200%
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by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.