A sample has a pH of -0.248 (yes, it really is possible to have a negative pH). Find
the pOH, [H] and [OH].

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.