28. As an acid solution is added to neutralize a base solution, the OH- concentration of the base solution A) decreases B) increases C) remains the same​

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

  the mississippians were considered to be  horticulturalists, which means they were

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.