Concentrated (stock) hydrochloric acid (12 M) solution is purchased from a chemical supply company. You must make up 500. mL of 0.200 M HCl solution for your lab. How many mL of the stock HCl will you need?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?