Final answer:
The molarity of the solution is 1.61 M.
Step-by-step explanation:
To find the molarity of a solution, you need to divide the number of moles of solute by the volume of the solution in liters. First, convert the mass of methanol (CH₃OH) to moles using its molar mass. Then, convert the volume of the solution from milliliters to liters. Finally, divide the number of moles by the volume to find the molarity.
In this case, the molar mass of methanol is 32.04 g/mol. Converting 7.76 g of methanol to moles gives:
7.76 g / 32.04 g/mol = 0.242 mol
Converting 1.50 × 102 mL to liters gives:
1.50 × 102 mL / 1000 mL/L = 0.150 L
Finally, dividing the number of moles by the volume gives the molarity:
0.242 mol / 0.150 L = 1.61 M