1. The problem statement, all variables and given/known data Which of the following allows you to quantitatively determine the composition of a crude product after synthesis? Explain. a. NMR b. melting point c. TLC 2. Relevant equations none 3. The attempt at a solution I know that TLC is used for determining whether an impurity is present or not, so I don't think it can determine how much of an impurity there is. I'm not sure about NMR and melting point though. Please help?