Question

How many moles of NaCl are contained in each volume of aqueous NaCl solution?

a. 5.0 L of a 7.2 M solution
b. 62 mL of a 5.5 M solution

Answer 1

To find the number of moles of NaCl in a 62 mL of a 5.5 M solution, convert the volume to liters and multiply by the molarity, resulting in 0.341 moles of NaCl.

Step-by-step explanation:

To determine the number of moles of NaCl in a 62 mL of a 5.5 M NaCl solution, you can use the formula:

Number of moles = Molarity (M) × Volume (L)

First, convert the volume from milliliters to liters:

62 mL × (1 L / 1000 mL) = 0.062 L

Then, calculate the number of moles of NaCl:

5.5 M × 0.062 L = 0.341 moles of NaCl

Therefore, there are 0.341 moles of NaCl in 62 mL of a 5.5 M solution.