What is the molarity of an aqueous solution that contains 0.072 g C2H6O2 per gram of solution? The density of the solution is 1.40 g/mL.

1.626 M

Explanation:

Let's start by calculating how many grams of C₂H₆O₂ are there per mL of solution:

So the C₂H₆O₂ concentration can be expressed as 0.1008 g/mL.

Now we convert g/mL to molarity, using the molar mass of C₂H₆O₂:

(1 mL = 0.001 L)