How many moles are contained in 0.455 L of a 7.182 M solution?

A 3.271 moles.

explanation

To determine the number of moles in a solution, we can use the formula:
Moles = Molarity × Volume

In this case, the volume of the solution is given as 0.455 L, and the molarity is given as 7.182 M. Let's calculate the number of moles:
Moles = 7.182 M × 0.455 L ≈ 3.27081 moles

Therefore, there are approximately 3.27081 moles contained in 0.455 L of a 7.182 M solution.