Asolution is prepared by dissolving 150 ml of ethanol in enough water to make a 500 ml solution. what is the percent by volume of ethanol in the solution?

10%

30%

70%

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which of the following are correct values for the ideal gas laws constant r

The volume of a single vanadium atom is 9.29×10-24 cm3. what is the volume of a vanadium atom in microliters?