kids3
Nov 2, 2010, 05:25 PM
What is the molarity of a solution consisting of 0.750 mol NaCI dissolved in 4.50 L of solution
I got 14.61mol is that right?
DrBob1
Nov 2, 2010, 08:40 PM
No, that's not correct. You should realize that it is wrong because the answer should be M (molarity: moles per liter) and you say you got
14.61 mol. Wrong units, wrong answer. The units of the answer - moles per liter - tell you exactly how to solve the problem. Do you realize that "per" means "divided by"? Try it again and show your work and your answer.
pramod_awasthi
Nov 25, 2010, 10:15 AM
0.750 mol NaCl dissolve in 4.50 L so molarity will be
0.75/4.50 = 0.16 M ( mol/L)