A chemist wants to make 5 L of a solution of NaCl that has a molarity of 0.5. How many moles of NaCl do they need?

Question

Quizplus · Accepted Answer

In this problem, we are given the desired concentration and the volume, and we need to find the number of moles.
molarity x volume = moles.  
So, to get the number of moles, we just need to multiply the solution concentration by the volume, like this:
0.5 M x 5 L = 2.5 moles

A Chemist Wants to Make 5 L of a Solution