What is the mass of 0.20 mole of C2H5OH (ethanol)?
46 g
23 g
4.6 g
none of these
Use the relation
One mole of molecules = Gram molecular mass of substance
Then use unitary method to calculate the mass of 0.20 mole.
A solution of ethanol, C2H5OH, is prepared by dissolving 25.0 mL of ethanol in enough water to give a total volume of 250.0 mL. What is the volume percent of ethanol?