To make a 6.50M solution, how many moles of solute will be needed if 12.0 liters of solution are required

78 moles of the solute

Explanation:

From the question;

Molarity of the solution is 6.50 M Volume of the solution is 12.0 L

We want to determine the number of moles needed

We need to know that;

Molarity = Number of moles : Volume

Therefore;

Number of moles = Molarity * Volume

Hence;

Number of moles = 6.50 M * 12.0 L

= 78 moles

Thus, the moles of the solute needed is 78 moles