What is the percent by volume of ethanol in a solution made by dissolving 39.5 ml of ethanol in 215 ml of water

Percent by volume of ethanol = 15.5%

Explanation:

Percent by volume is expressed as % v/v. Mathematically, it is the ratio of the volume of the solute to the volume of the solution (solute+solvent) multiplied by 100.

Formula:

%

Here:

V(solute=ethanol) = 39.5 ml

V(solution = ethanol + water) = 39.5 + 215 = 254.5 ml

%%

the answers would be

the first one and the second one

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).