Hello, I have been studying undergraduate level chemistry courses for PhD proficiency exam, and I have very recently been started Analytical Chemistry. I have a simple problem and I solved it in a different way, could you please show me how I can solve it by using the known "gravimetric factor"? Or I maybe have used it without noticing The question is as follows: Okay, my solution goes like this: My questions: 1) What is the cause I am getting different answers? I am suspecting from using 35.5 grams/mol for chlorine atom; maybe I have to find more precise number from elsewhere; it is not given to me in this question. 2) Can you please show the solution of this problem by using gravimetric factor, along with its description? I have been unable to comprehend it so far. Thank you for your interest.