You are given a piece of paper and a match. The paper has a mass of 2.5 g. You then light the match and light
the piece of paper on fire. After it burns, the remaining
bits of paper weigh 0.5 g. Does this demonstration
violate the conservation of mass? Explain why or why
not?

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices