Well, to find molar mass from freezing point depression, you use ΔTf = i * Kf * m, and solve for moles of solute. But in our lab yesterday, the obvious answer fell apart because we used tap water instead of distilled—the impurities changed Kf itself. So, I learned to check the solvent first, much like how my Amma checks for stones in the rice before cooking.
#archery#recurve
Jump in to reply — no account needed.