If 40 g of ethyl alcohol is dissolved in 50 mL of water, then calculate the weight/volume percentage of ethyl alcohol present in the solution. (density of ethyl alcohol = 0.8 g/mL)

Explanation

Amount of ethyl alcohol = 40 g
Volume of ethyl alcohol =` 40/0.8 = 50 `mL
Volume of water = 50 mL
Total volume of the solution is 100 mL
Mass by Volume % of solute = `("mass of the solute in the solution") / ("total volume of the solution")times 100`
`(W/V)%` ethyl alcohol = `40/100 xx 100 = 40%`.