Question

Calculate the moles of solute in 166.7 ml of 0.423 M CaCl2.

a) 0.0706 moles
b) 0.500 moles
c) 0.0353 moles
d) 0.120 moles

Answer 1

To calculate the moles of solute in a solution, multiply the molarity by the volume in liters.

Step-by-step explanation:

To calculate the moles of solute in a solution, you need to use the formula:

Moles of solute = Molarity x Volume (in liters)

First, convert the volume from milliliters to liters by dividing by 1000.

166.7 ml / 1000 = 0.1667 L

Then, multiply the molarity of the solution (0.423 M) by the volume in liters:

0.423 M x 0.1667 L = 0.0706 moles

Therefore, the correct answer is option a) 0.0706 moles.