Calculate the molarity of a solution containing 25.0 moles of ethanol (C₂H₅OH) in enough water to make 3.5 liters of solution?

7.14mol/dm3

Explanation:

Molarity is calculated by dividing the amount of a substance in volume of the solution.

i.e Molarity = (Amount in moles/volume in liters or dm3)

Given that:

Amount of moles = 25.0 moles

Volume = 3.5 liters of solution

Recall that 1 liter = 1dm3

so, 3.5 liters = 3.5dm3

Molarity = (25.0moles/3.5dm3)

= 7.14mol/dm3

Thus, the molarity of the solution is 7.14mol/dm3

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