Final answer:
The molarity (M) of a solution with 3.4 moles of a compound dissolved in 1.24 liters is 2.74 M. This concentration is obtained by dividing the number of moles by the volume in liters.
Step-by-step explanation:
The molarity (M) of a compound is calculated by dividing the number of moles of the solute by the volume of the solution in liters. In this case, the student has 3.4 moles of a compound dissolved in 1.24 liters of solution. Thus, the molarity is found using the formula: M = moles of solute / liters of solution.
Performing the calculation:
M = 3.4 moles / 1.24 liters = 2.7419 M
The answer is rounded to two decimal places as follows:
Molarity = 2.74 M
This concentration can also be referred to as '0 point seventy-four molarity' or '0 point seventy-four molar' depending on preference.