Answer: 0.625 moles of solute are contained in a 250.0 ml solution with a concentration of 2.5 M
Step-by-step explanation:
Molarity : It is defined as the number of moles of solute present per liter of the solution.
Formula used :
where,
n= moles of solute = ?
= volume of solution in ml = 250 ml
Now put all the given values in the formula of molarity, we get

Therefore, the moles of solute will be 0.625.