Answered

How many moles of solute are contained in a 250.0 ml solution that has a concentration of 0.85 M?
A. 210 moles
B. 0.21 moles
C. 3.4 moles
D. 0.29 moles
E. 0.85 moles



Answer :

Answer: B - 0.21 moles

Explanation:

To find the number of moles of solute added to a solution, the formula is

Moles of solute = Molarity(M) x Volume of solution

Given:

  • Molarity= 0.85 M
  • Volume of solution= 250ml = 0.250L

Calculate the moles of solute,

Moles of solute=0.85M x 0.250ml = 0.2125mol

Therefore, 0.2125 moles of solute are added to 250ml solution.