50mL of ethanol (density=0.79 g/mL) is dissolved by 400 mL of water. What is the concentration of ethanol in this solution?

The concentration of ethanol in this solution : 2.14 M

Molarity is a way to express the density of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

Ethanol(C₂H₅OH) MW =46,06844 g/mol[

i believe the answer is three water molecules